Answer:
-32m+70
Step-by-step explanation:
-5(8m-7)
-5*8: is -40m
-5*-7 is 35
-40m+8m+70 is -32m+70
15 feet
C or the triangles
216 - 6^3
512 - 2^9
8 - 2^3
729 - 3^6
27 - 3^3
343 - 7^3