Use the pythagorean theorem. It would be set up as
a^2 + 3.7^2 = 4.0^2
C and A is the best answer
$29 dollars is the overall change in his account. The reason that this is correct is because if you make a number line -4 is exactly 29 units away from 25.
The answer in the green box should be 9.
=
.
