The s a t® Practice Test #6 Math Test—Calculator


Question 30 refers to the following information



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Question 30 refers to the following information.


The following scatterplot shows the amount of electric energy generated, in millions of megawatt‑hours, by nuclear sources over a 10‑year period.


Begin skippable figure description.

The figure presents a scatterplot in the x y‑plane titled “Electric Energy Generated by Nuclear Sources.” The x‑axis is labeled “Time, in years,” and the numbers 0 through 12, in increments of 2, are indicated. The y‑axis is labeled “Energy, in million megawatt‑hours,” and the numbers 700 through 820, in increments of 20, are indicated. There are 10 data points scattered in the form of a curve. The first data point begins approximately at the point with coordinates 1 comma 764. The points follow a path varying upward and downward and to the right, until reaching the point with coordinates of approximately 8 comma 806. The points then move downward and to the right, ending at the point with coordinates of approximately 10 comma 768.

The data represented by the points are as follows. Note that all values are approximate.

Point 1: 1 year, 764 million mega‑watt hours.

Point 2: 2 years, 788 million mega‑watt hours.

Point 3: 3 years, 781 million mega‑watt hours.

Point 4: 4 years, 785 million mega‑watt hours.

Point 5: 5 years, 804 million mega‑watt hours.

Point 6: 6 years, 803 million mega‑watt hours.

Point 7: 7 years, 796 million mega‑watt hours.

Point 8: 8 years, 806 million mega‑watt hours.

Point 9: 9 years, 790 million mega‑watt hours.

Point 10: 10 years, 768 million mega‑watt hours.


End skippable figure description.
Question 30.

Of the following equations, which best models the data in the preceding scatterplot?

A y equals 1.674 x squared, plus 19.76 x, minus 745.73

B y equals negative 1.674 x squared, minus 19.76 x, minus 745.73

C y equals 1.674 x squared, plus 19.76 x, plus 745.73

D y equals negative 1.674 x squared, plus 19.76 x, plus 745.73



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