Answer:
5
Step-by-step explanation:
First multiply 7 and 4
7 * 4 = 28
Then divide 140 by 28
140/28 = 5
Height is 5
Answer: f^-1(x)=-7x+3 maybe ? i think
y=105
82+75+x=180
157+x=180
x=23
82+23=y
105=y
I think it is 710