9y-4-11y+7 how do i solve this

Rose bought a new hat when she was on vacation. the following formula describes the percent sales tax rose paid b=t-c/c

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?

When steve woke up. his temperature was 102 degrees f. two hours later it was 3 degrees lower. what was his temperature then?