If Jaden had a dollar bill, one quarter, and two pennies, how much money does Jaden have?

If f(x) = 3-2x and g(x) =1/x+5 to what is the value (f/g)(8)

Carley bought a jacket that was discounted 10% off the original price. the expression below represents the discounted price in dollars, based on x, the original price of the jacket.

Could someone me with this question i’ve been stuck on it for 20 minutes