The unit rate is a ratio of change in y and into the change on x. It can also be the rise to run or the slope.
The answer is going to be a fraction...which is 75/1000, otherwise known as 1/40
3/4 divided by 4 is 0.1875
'is' means equals
'of' means mutily so
we have
18 =0.4 times what
divide both sides by 0.4
45=what
the answer is the number is 45
The answer is D it shrinks to 35