25 POINTS NO CAP PLEASE HELP ME NEED RIGHT ANSWER

You attended 25 classes

Step-by-step explanation:

when you do this you subtract the annual fee of $100 from the total payment $225 which leaves you with $125 then you divide it by The fee for each class Which is $5 so you get 25 classes

f(x) has value 150 at x= 0

and 0 at x= 3

so d(f(x))/dt = slope = -150/3 = -50