Example 6: BC - 3x + 2 and CD - 5% - 10.
Solve for x. What is the length of BD?

Mat bought a phone for $100. he has to pay $30 per mouth. if he has paid $640 in total, how many mouth has he had the phone?

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.

Mario is constructing a frame for 10 in. by 8 in. photo. he wants the frame to be the same with all the way around in the same area of the frame and photo to be 120 square inches what is the dimension of the frame?