The number of gallons of water in a leaking pool is determined by the rate that the water is filling, 4g2 + 4g − 3, and the rate that water leaks from the pool, 5g2 − 3g − 4, where g represents the number of gallons entering or leaving the pool per minute. Enter the expression for the net change in gallons per minute of the water in the pool. Find the change in the amount when the rate, g, is 5 gallons per minute.

7

step-by-step explanation:

the answer would be 7

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.

twenty-six miles over two gallons because the proportion for the original 13 miles to one gallon would be written 13/1 and, doing the same thing to the top and bottom, i multiplied by 2 and got 26/2