Ineed with number 7 and 8. this problem is from chapter 14.1 advanced 1 big ideas math. someone asap.

Problem 7:

Notice how multiplying the number of boxes {0, 1, 2, 3} by 30 produces a corresponding set of weights (in pounds)?

Weight = (30 lb / box) (x boxes)

The specific unit rate here is 30 lb / box.

A= r2 × 3.14 11×11 ↓ ↓ 121 × 3.14 = 379.94 → 379.9