4
practice examMultiple Choice

Practice Exam

Question 4 • Algebra II

The table shows data from a stadium concession stand, representing average temperature x in degrees Fahrenheit and the number of popsicles sold y x y x squared x y 65 22 4 comma 225 1 comma 430 72 25 5 comma 184 1 comma 800 85 52 7 comma 225 4 comma 420 88 65 7 comma 744 5 comma 720 92 78 8 comma 464 7 comma 176 cap sigma x is equal to 402 cap sigma y is equal to 242 cap sigma x squared is equal to 32 comma 842 cap sigma x y is equal to 20 comma 546 Which regression equation correctly models the data?

Answer
A
y is equal to 2 point 0 9 x minus 114
B
y is equal to 0 point 6 0 x minus 17
C
y is equal to 2 point 0 9 x minus 120
D
y is equal to 0 point 6 0 x minus 0 point 1 6
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The table shows data from a stadium concession…