A$40 backpack is on sale for $28. what is the percent of change?

30%

12%

-30%

-70%

Can (3,5 and square root 34) be sides on a right triangle?

State whether weight is a function of height for the six students and explain. a. yes, height is a function of weight because two students weigh 165 pounds but have different heights. b. no, height is not a function of weight because two students weigh 165 pounds but have different heights. c. yes, weight is a function of height because for each value of height there is one corresponding value of weight. d. no, weight is not a function of height because there is not enough data to determine a function.

Which expression is equivalent to7_/x^2 ÷ 5_/y^3? assume y# 0