Answer:
v = (-4, -5)
Step-by-step explanation:
v2 + 9v + 13 = -7
v2 + 9v + 20 = 0
(v + 4)(v + 5) = 0
-4,-5
first set the equation equal to 0, v^2+9v+20, factor v^2+4v+5v+20, v(v+4) 5(v+4), so the 2 factors are (v+5) and (v+4), set both equal to that 0. v+5=0 v=-5 and v+4=0 v=-4, so the answer is -4 and -5
Answer: 6 to 24
160 cubic inches
