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Answer: ASet 16: Linear Functions (Intermediate)
Explanation
A linear model predicts sales () based on ad spend (): . If ad spend increases by $100, how much do sales increase?
A.✓ Correct
$250
B.
$100
C.
$2.50
D.
$1250
Detailed Explanation
Choice A is correct. Choice A is the correct answer. Interpret slope. 1. Slope: 2.. This means for every $1increase in x, y increases by \2.5. 2. Increase: If x increases by 100, y increases by 2.5 \times 100 = 250$$. Strategic Tip: Change in y = Slope \times$ Change in x. Choice B is incorrect because it's the change in x. Choice C is incorrect because it's the slope. Choice D is incorrect because it adds the base.
Key Steps:
•
The correct answer is $250
Why others are wrong:
B: Choice B is incorrect and may result from a calculation error.
C: Choice C is incorrect and may result from a calculation error.
D: Choice D is incorrect and may result from a calculation error.
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