Quarter 2 Cumulative Quiz. Directions: Write the letter of the correct answer on the line provided.

Transcription

1 Name Math 8 Quarter 2 Cumulative Quiz Date Period Directions: Write the letter of the correct answer on the line provided. 1. The variable expression 4 2g represents the word phrase a) a number increased by two minus four b) four minus twice a number c) a number less four d) four less than twice a number 2. Simplify 5x 2(x 4) a) 3x 4 b) 3x + 8 c) 7x + 4 d) 7x Write the translation that maps point P( 5, 7) onto P ( 2, 3). a) (x, y) (x 4, y 3) b) (x, y) (x + 3, y + 4) c) (x, y) (x + 4, y + 3) d) (x, y) (x 3, y 4) 4. The mass of an orchid seed is approximately gram. Which of the following is number written in scientific notation? a) b) c) d) Which expression is equivalent to 8 3 a) b) c) d) Which best describes 45 a) It is between 40 and 50 b) It is between 22 and 23 c) It is between 6 and 7 c) It is equivalent to Which of the following demonstrates the associative property? a) (3 + 4) 2 = b) (2 8)7 = 2(8 7) c) = d) = Which of the following is an irrational number? a) 4 5 b) c) 3 d) 123,618,987

2 9. Which is equivalent to h 0? a) h b) 0 c) 1 d) undefined 10. Jessica went shopping for a new watch. She found a watch that was originally priced at $50 on sale for $40. By what percent had the watch been marked down? a) 10% b) 20% c) 25% d) 40% 11. What is the function rule for the following table. n f(n) a) f(n) = n + 5 b) f(n) = 4n + 1 c) f(n) = 4n + 5 d) f(n) = 5n Rotate point (4, 6) about the origin. What will the coordinates of the image be? a) ( 4, 6) b) ( 4, 6) c) (4, 6) d) (4, 2) 13. Which inequality matches the graph below? a) x > 6 b) x 6 c) x 6 d) x The video store rents movies for $3.50 the first day. There is a $2.00 charge for each additional day, d. Which expression represents this relationship? a) $ $2.00d b) $3.50d + $2.00 c) $3.50 $2.00d d) $3.50d $ The cost of Cynthia s dinner is $ She pays an additional tip that is 20% of the cost of the dinner. What is the best estimate for the amount of the tip? a) $2.00 b) $3.00 c) $4.00 d) $5.00

3 16. In which diagram are 1 and 2 supplementary? 17. The table below shows the relationship between the hours Joe works and the money he earns. How much money does Joe earn if he works 10 hours? Joe s Earnings Hours Worked Money Earned 2 $ $ $ a) $50.00 b) $62.50 c) $75.00 d) $ A window washer leans a ladder up against a wall so that the top of the ladder touches the base of the window, as shown below. The bottom of the ladder is 15 feet from the wall, and the base of the window is 26 feet from the ground. What is the length of the ladder to the nearest foot?

4 19. Graph y = 2x + 3. Make sure to label your graph and include a t-table with a minimum of 3 points. 20. Sweaters were on sale for 20% off of the original price. Kelly bought a sweater on sale that had an original price of $ The sales tax was 7.25%. How much did Kelly pay for the sweater? Answer $ 21. In the figure below, DC intersects BA at point B. What is the measure, in degrees, of ABC? [Not Drawn To Scale] Answer degrees

5 Simplify Directions Solve each of the following. You must show all steps in the process for full credit y 7 = = 5(x 5) + 4x a + 57 = 7a A figure is reflected over the y-axis. If one of its original vertices is at ( 4, 1). What are the new reflected coordinates of the vertex? (, ) Directions: Answer each word problem. Show all work for credit. Write your solution in a sentence. 28. Tim is a cartoonist. He rented a booth at the community fair last Friday for $35, where he sold his drawings for $5 each. After he paid the rental fee, he had $225 as his earnings for the day. Use the equation 5x 35 = 225, where x represents the number of drawings he sold to find how many drawings he sold.

6 29. In the figure below, lines k and n are parallel. Line l is a transversal. [Not Drawn To Scale] Part A What is the value of x? Answer Part B What is the measure, in degrees, of A?