Sandy purchases her college books for the upcoming semester. She has to pay $98 for a biology book, $38 for a used poetry book, and $74 for a trigonometry
textbook. If the sales tax rate is 7.5%, how much tax will Sandy pay?

Achemist has 200 ml of a 10% sucrose solution. she adds x ml of a 40% sucrose solution. the percent concentration, y, of the final mixture is given by the rational function: the chemist needs the concentration of the final mixture to be 30%. how many milliliters of the 40% solution should she add to the 10% solution to get this concentration?

What is true about the dilation? it is a reduction with a scale factor between 0 and 1. it is a reduction with a scale factor greater than 1. it is an enlargement with a scale factor between 0 and 1. it is an enlargement with a scale factor greater than 1.

Solve the equation -9p - 17 =10 a -3 b. 16 c. 18 d -16