For his science project, timor has 1 pea plant and 3 bean plants. he measures the heights of the plants once a week. this week's data are shown in the table. which expression will him find the average height of the bean plants this week?

(10 + 12 + 11 + 20) ÷ 4

(12 + 11 + 20) × 3

(12 + 11 + 20) – 3

(12 + 11 + 20) ÷ 3

I am doing this lesson and the answer was: (12 + 11 + 20) ÷ 3

-12 > a

step-by-step explanation:

-11 > 1 + a

subtract 1 from each side

-11 -1> 1 -1+ a

-12 > a

income. 10x+1300

expenses 3x+(1800+1500)

expenses 3x+3300

to break even:

income = expense,

10x + 1300 = 3x + 3300,

solve for x.

step-by-step explanation:

mark brainliest