Geri used coupons at the grocery store and received a discount of $40.94. once her discount was subtracted, the final cost of her purchases was $122.80. what was the approximate percent decrease in the price of her groceries due to the coupons?

Sam makes his sales calls according to a pattern. he travels either north or south depending on the calendar. some of his past trips were as follows: on february 17, april 24, june 10, september 19, and november 3 he drove north. on february 28, may 25, august 22, november 20, and december 18, he drove south. describe sams' pattern. in which direction will sam drive on oct4 and oct 24?

Suppose sat writing scores are normally distributed with a mean of 497 and a standard deviation of 109. a university plans to award scholarships to students whose scores are in the top 2%. what is the minimum score required for the scholarship? round your answer to the nearest whole number, if necessary.

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'