When Grant was 8, his brother was half his age. Now, Grant is 14. How old is his brother?

What is the ratio of the length of an object in yards to the length of the same object in miles?

What is the sum of the geometric series in which a1 = 7, r = 3, and an = 1,701? hint: cap s sub n equals start fraction a sub one left parenthesis one minus r to the power of n end power right parenthesis over one minus r end fraction comma r ≠ 1, where a1 is the first term and r is the common ratio

What rule describes a dilation with a scale factor of 4 and the center of dilation at the origin?