Quick please

Explain how to use a coordinate plane to find the area of

a rectangle with vertices (-4, 9).(-4,-3), (-1, -3), and

(-1,9). What is the area?

Find the unit rate for: 75% high-fiber chimp food to 25% high -protein chimp food.

Ineed here’s a picture of the question

Jo divides a candy bar into eight equal pieces for her children to share she gives three pieces to sam three pieces to leslie and two pieces to margie rose the two month old baby does it doesn't get any what fraction shows how muchw candy each of the four children got. what's the answer to my question