Provide an appropriate response.Roberto is an employee of a store and receives 20% discount off all items in the store. During a sale, the price of a jacket is reduced by $15. Roberto will receive both his 20% discount and the $15 off. Which is better for Roberto: to take his 20% discount first and then subtract $15, or to subtract $15 first and then take his 20% discount? Explain.
What will be an ideal response?
It is better for Roberto to take his 20% discount first, since 20% of a larger number (x) is greater than 20% of a smaller number (x - 15). For example, if the original price of the jacket was $100, taking the 20% discount first would reduce the price to $80, and taking $15 off this would make the price $65. However, taking the $15 off first would reduce the price to $85, and taking 20% off this would make the price $68. (Explanations will vary.)
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Solve the problem.April shoots an arrow upward into the air at a speed of 64 feet per second from a platform that is 28 feet high. The height of the arrow is given by the function h(t) = -16t2 + 64t + 28, where t is the time is seconds. What is the maximum height of the arrow?
A. 24 ft B. 28 ft C. 64 ft D. 92 ft
Solve the problem.Bert is 22 kilometers away from Brenda. Both begin to walk toward each other at the same time. Bert walks at 3.5 kilometers per hour. They meet in 4 hours. How fast is Brenda walking?
A. 4 kilometers per hour B. 3 kilometers per hour C. 3.5 kilometers per hour D. 2 kilometers per hour
Factor completely. If the polynomial is prime, state so.125a3 - 8b3
A. (5a + 2b2)(25a2 - 10ab + 4b2) B. (5a - 2b)(25a2 + 4b2) C. (125a - 2b)(a2 + 10ab + 4b2) D. (5a - 2b)(25a2 + 10ab + 4b2)
Determine the equations of any horizontal and vertical asymptotes of 
.
A. horizontal: y = 0; vertical: x = -5 B. horizontal: y = -5; vertical: x = 0 C. horizontal: y = 5; vertical: x = -5 D. horizontal: y = 0; vertical: x = 5 E. horizontal: y = 0; vertical: none