Cynthia's grandpa says that his first simple calculator cost $80. Cynthia knows she just bought a new calculator for $4. What is the percent decrease in the price of a calculator?

What is the missing reason in step 5? linear pair postulategivendefinition of complementary anglescongruent complements theorem

Use the method of cylindrical shells to find the volume v generated by rotating the region bounded by the curves about the given axis.y = 7ex, y = 7e^-x, x = 1; about the y-axis

Liz is shipping a package to her friend. the maximum weight of a medium flat-rate box is 20 pounds, including the box which weighs 6 ounces. write and solve an inequality to describe the possible weight in pounds, w, of the contents that liz will ship to her friend if she must use a medium flat-rate box. use the drop-down menus to explain your answer.