Simplify 8 2(10 – r). a. 7r – 18 b. –2r – 18 c. –2r – 9 d. 28 – 2r

Adj has a total of 1075 dance and rock songs on her system. the dance selection is 4 times the size of the rock selection. write a system of equations to represent the situation.

Which shows the correct substitution of the values a,b and c from the equation 1=-2x+3x^2+1

What is the radius of a circle with an area of 78.5 cubic inches? use 3.14 for pie