Multiply.
x²+2x-3
.8+1
38-3
Y+2
Simplify your answer as much as possible.

Haruka hiked several kilometers in the morning. she hiked only 66 kilometers in the afternoon, which was 25% less than she had hiked in the morning. how many kilometers did haruka hike in all?

Is this a polynomial function? i need to know asap

Set up and solve a proportion for the following application problem. if 55 pounds of grass seed cover 404 square feet, how many pounds are needed for 7272 square feet?