Answers are -39 and 230 cm ^2.
b. Find sum or difference of -14 -25 = -39
Step by step, combine negative numbers.
b. Find area of figure.
I like to see two figures here, a rectangle and a triangle. See attachment.
Formula for rectangle = L x W
17 x 10 = 170
Formula for triangle = 1/2 base x height
1/2 x 10 x 12 = 60
Add two figures together for total of 230.