*asap! *

explain how to fully factor each of the following. if it is a special case, identify it.
a. x^2 – 7x + 10
b. 4x^2 – 81
c. p(x)=3x^3-12x

Arecipe uses 2 cups of sugar to make 32 brownies. how many cups of sugar are needed to make 72 brownies?

You are at a restaurant and owe $38 for your meal. you want to leave a 20% tip. how much will your tip be?

What is the greatest number of parts of a circle that can be formed by cutting the circle with 7 straight cuts? (note: the parts do not have to be equal in size)