Astudent needs to make a circular cardboard piece with an area between 154 square inches and 616 square inches. the function f(r) relates the area of the cardboard piece, in square inches, to the radius r in inches. which of the following shows a reasonable domain for f(r)?

a) 7 < r < 14
b)154 < r < 616
c) all positive integers less than 7
d) all positive integers between 14 and 154

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

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step-by-step explanation:

graph using a few selected

x         y

-1       15

0         6

1         2.4

2       0.96