Missy bought a skateboard for $49.50 with a discount of 15% and a helmet for $37.60. the sales tax on both items was 6%. if she paid with a $100 bill, how much change will she get back from the cashier?

$18.72

Step-by-step explanation:

15% of $49.50 is $7.42

$49.50 - $7.42 = $39.08

$39.08 + $37.60 = $76.68

6% of $76.68 is $4.60

$76.68 + $4.60 = $81.28

$100 - $81.28 = $18.72

true

step-by-step explanation:

f(x) has value 150 at x= 0

and 0 at x= 3

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