Simplify the expression:

10x-8xy-3xy

2ab-7ab+7a2

-a^4+2a^3-4a^4+2a^2-3a^2

If x + 4 = y, then x + 12 =

A cone has the diameter of 15 inches and is 27 inches tall what is the volume for the cone?

Andy is one-fourth as old as his grandfather Who is 76 years old

What is the slope of the equation Y =

Describe the graph of the linear function whose equation is y=3x+3/2

A ball is kicked straight up into the air. The height of the ball in feet is given by the expression - 16t2 + 12t + 4, where t is time in seconds. Factor the expression. Then find the height of the ball after 1 second.

Find all the solutions to the equation: |cos2x|=1/2

If p (x) = 2x^2-4 and q (x) = x-3, what is (poq) (x)

For his long distance phone service, Eric pays a $7 monthly fee plus 7 cente per minute. Last month, Eric's long distance bill was $19.04. For how many minutes was Eric billed?

Find the product of the complex number and its conjugate. 3 + 3i