When the following expression is written in simplest form, what is the coefficient of the variable term? -2.5y + 8y - 10.5y

a, -5
b, 5.5
c, 0
d, -21

Me. drysdale earned 906.25 in interest in one year on money that he had deposited in his local bank if the bank paid an interest rate of 6.25% how much money did mr. drysdale deposit

Me. drysdale earned 906.25 in interest in one year on money that he had deposited in his local bank if the bank paid an interest rate of 6.25% how much money did mr. drysdale deposit

The graph represents the gallons of water in a water tank with respect to the number of hours since it was completely filled