Which of these best represents the rate of change of the maximum area are painted with respect to the number of gallons of paint used ?

For f(x)=2x+3 and g(x)=x^2- 8 find (f+g) (x)

Kyle and elijah are planning a road trip to california. their car travels 3/4 of a mile per min if they did not stop driving, how many miles could kyle and elijah drive in a whole day? ? 1 day = 24 hours. plzzz i will give you 100 points

Another type of subtraction equation is 16-b=7. explain how you would sole this equation then solve it.