In an ecosystem some animals get energy by eating plants. An elk can eat 20 pounds of plants each day. Write and evaluate an expression to find how many pounds of plants a herd of 18 elk can eat in one week.

step-by-step explanation:

3. (5x + 1) - (-10x + 6)

simplify the answer choice. combine like terms. remember to distribute the negative to the terms inside the second parenthesis. also remember that two negatives = one positive, and one of each sign = negative.

- (-10x + 6) = + 10x - 6

simplify. combine like terms:

5x + 1 + 10x - 6

5x + 10x + 1 - 6

15x - 5

∴ it is your answer

~

x-3y=4

step-by-step e