Answer:
Q1: 11x - 8
Q2: 2x + 10
Q3: -3v + 12
178.3 mm²
Step-by-step explanation:
Surface area = Base area + 3 x side triangles area
Sₐ = 43.3 + 3 x (1/2 x (10 x 9)) = 43.3 + (3 x 45) = 178.3
C
7.69230%
R=I/P×T
R=$182/$700×2
R=182/1400
R=91/700
=7.69230%