SAT Mathematics Practice Test 7

Questions 27 and 28 refer to the following information.

The scatterplot above shows the densities of 7 planetoids, in grams per cubic centimeter, with respect to their average distances from the Sun in astronomical units (AU). The line of best fit is also shown.

Question : 28 of 59

Marks: +1, -0

An astronomer has discovered a new planetoid about 1.2 AU from the Sun. According to the line of best fit, which of the following best approximates the density of the planetoid, in grams per cubic centimeter?

Validate

Solution:

According to the line of best fit, a planetoid with a distance from the Sun of 1.2 AU has a density between

4.5 \text "g/cm"^3

and

\text "4.75 g/cm"^3

. The only choice in this range is 4.6.

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