A grey umbrella costs $8 plus $0.72 in taxes. A yellow umbrella costs 3 times as much as the grey umbrella. How
much does the yellow umbrella cost, in total?
Select the expression that represents the problem above,

$26.16

Step-by-step explanation:

Since it says "A grey umbrella costs $8 plus $0.72 in taxes"that means a grey umbrella costs $8.72.So you have to do $8.72 * 3 which equals,$26.16

hope this helped!

f(x) has value 150 at x= 0

and 0 at x= 3

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