Answer:
the marked choice is correct
Explanation:
It usually works well to follow directions: use technology. The attachment shows the use of the technology I like for short regression problems. For longer problems, a spreadsheet program is a good choice.
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In this problem, it is easy to eliminate the nonsensical answers, so no real use of technology is necessary.
First of all, the y-value for x=0 needs to be near 48, eliminating the last two choices.
Second, the minimum of the function corresponds to a positive x-value, so the coefficient of the x-term must have opposite sign from the coefficient of the x^2 term. This eliminates the second choice, leaving the marked choice as the only viable one.