If you had all of the following plants, which ones would you put together to avoid soil erosion? corn (10 beans (2 tomatoes (3 peppers (2.5 ft.) a. beans and tomatoes b. peppers and beans c. corn and beans d. tomatoes and peppers

It's C. Corn and beans.

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C. Corn and beans

Explanation:

Soil erosion is a process by which topsoil of the earth loss continuously due to weathering agents such as water and wind. Soil erosion can be prevented by growing plants in the field. Growing of long plant such as corn (10ft) combined with short height plant such as beans (2ft) conserve soil.  Corn root will bind deep layers soil with their roots while beans root protect surface soil.    

9.9 years

a = p(1 + rt) . . account balance after time t at rate r starting with principal p

3000 = 2500(1 + 0.0202t) . . filling in the given numbers

1.2 = 1 + 0.0202t . . divide by 2500

0.2 = 0.0202t . . . subtract 1

0.2/0.0202 = t ≈ 9.901

it will take about 9.9 years for the account balance to reach $3000.