Convert 64 quarts to gallons​

Find the average rate of change for f(x) = x2 − 3x − 10 from x = −5 to x = 10.

Liz had 140 pens and inna had 100 pens. after inna gave liz some pens, liz had 3 times as many pens as inna. how many pens did inna give liz?

Answer asap evaluate 4-0.25g+0.5h4−0.25g+0.5h when g=10g=10 and h=5h=5.