Answer:
7.5
Step-by-step explanation:
Im so sorry if this is wrong im not good with word problems but
i got 2(h-3)= 9
then 2h-6=9
then 2h=15
finally h=7.5
He is correct because the equation would be 10/1 X 1/10 so it would multiply to 10/10 when simplifies it would be 10
In y = mx + b form, the y intercept can be found in the b position
y = mx + b
y = 3x + (-4)
so ur y intercept is -4