# Algebra

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Astronomers measure large distances in light-years. One light-year is the distance that light can travel in one year, or approximately 5.88 *10^12 miles. Suppose a star is 3.2 * 10^2 light-years from Earth. In scientific notation, approximately how many miles is it?

A)1.88 x 10^12
B)5.88 x 10^14
C)3.2 x 10^15
D)1.88 x 10^15

• Algebra -

1 light year = 5.88*10^12 miles
so....

3.2 * 10^2 light-years= ? miles

?miles : multiply 3.2 * 10^2 light-years and 5.88*10^12 together

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