Which of the following properties was used in the expression shown here? 5(25x-6)=125x-30
a. distributive property
b. associative property
c. commutative property

Could answer every question with steps

For the given quadratic equation convert into vertex form, find the vertex and find the value for x=6 y=-2x^2+2x+2

At the electronics store you have a coupon for 20% off up to 2 cds you buy for cds with the original cost of $10.99 each the sales tax is 5% what is the total cost of your purchase