The approximate total surface area of earth is 5.1 × 108 km2 . all the salt water on earth has an approximate surface area of 352,000,000 km2 , and all the freshwater on earth has an approximate surface area of 9 × 106 km2 . how much of earth’s surface is covered by water, including both salt and fresh water? write your answer in scientific notation.

$12. that is my answer.

b. y = 4x - 2

step-by-step explanation:

to find a parallel equation to an equation, make sure both equations have the same slope but different y-intercepts.

y = 4x + 1

4 = slope

1 = y-intercept

y = 4x - 2

4 = slope

-2 = y-intercept

they both have the same slope but different y-intercepts, so, b. is the correct answer.

and to check your work, you can graph both equations. : )