Solve the equation modeled below.

PLEASE GIVE WITH WORK!

If 3 3/4 lb. of candy costs 20.25 how much would 1lb. of candy cost

A3cm×3cm\greend{3\,\text{cm} \times 3\,\text{cm}} 3cm×3cm start color greend, 3, space, c, m, times, 3, space, c, m, end color greend rectangle sits inside a circle with radius of 4cm\blued{4\,\text{cm}} 4cm start color blued, 4, space, c, m, end color blued . what is the area of the shaded region? round your final answer to the nearest hundredth.

Ebert used to make $22 an hour, but got a 10% raise. how much more will he make in a 40 hour work week with raise?