Does anyone know how to get answers from the textbook “Glencoe math, Course 2 Volume 2

in problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. to find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

hope it

6-3=3

3*3=9

9+12=21

21/3=7

7*8=56

56 is your answer

the correct answer is

jeremy can row 1.333 miles per hour.