3questions, 15 points pr question if someone answers these 3 questions correctly. !

1: the formula v=lwh is used to calculate the volume of a rectangular prism. what is the equation solve for h?

a: vlw=h
b: lw/v=h
c: v/lw=h
d: vh=lw

2: what is the x=y+z solved for z?

a: x+y=z
b: x/y=z
c: y/x=z
d: x-y=z

3: in the formula rt=d, r is rate, t is time, and d id distance. what is the rate of the runner who completes 7.5 miles in 1.5 hours?

a: 11.25 mph
b: 9.0 mph
c: 6.0 mph
d: 5.0 mph