Need Help! Would like To know How to solve these..... Would like to know step by step(formula)

Numerical Skills/Prealgebra

2. The lowest temperature on a winter morning was –8°F. Later that same day the temperature reached a high of 24°F. By how many degrees Fahrenheit did the temperature increase?

A. 3°

B. 8°

C. 16°

D. 24°

E. 32°

3. If (3/4 -2/4) + (1/2 + 1/3)

2+3 is calculated and the answer reduced to simplest terms, what is the

denominator of the resulting fraction?

A. 24

B. 12

C. 6

D. 4

E. 3

5. Mr. Brown went grocery shopping to buy meat for his annual office picnic. He bought 7 3/4 pounds of hamburger, 17.85 pounds of chicken, and 6 1/2 pounds of steak. How many pounds of meat did Mr. Brown buy?

A. 32.10

B. 31.31

C. 26.25

D. 22.10

E. 21.10