PLEASE HELP

7r/t=5w
write t as a function of
r and w.

A10 inch cookie cake is divided into 8 slices. what is the area of 3 slices

Urgent? will give brainliest given that the blue triangle is a right triangle, which expression correctly gives the area of the red square? a) a2 + b2 b) a2 - b2 c) a2 - c2 d) c2 - a2

Will mark brainliest! ( explain the answer too, it can be one sentence)