When Amy roller-skates, she moves 110 yards per minute. What is her speed in miles per hour? Round your answer to the nearest hundredth.

No idea why you question ended up in English subject. Here is the solution:

110 yards = 0.0625 miles

1 minute = 1/60 hours

Speed = 0.0625 / (1/60) = 3.75mph (A)

2)

1 oz = 28.35g

15oz = 28.35 * 15 = 425.25g

453.6g = 1lb

793.8g = 1 * (793.8/453.6) = 1.75lb (D)

3)

82 = 18.5% of x

82 = 0.185x

x = 82/0.185 = $443.24 (B)