Answer:
7) x + 0.09x, where x is the price of the car
8) x + 0.05x where x is the price of clothing
9) It will take michael about 9.14 minutes to eat 32 cookies.
Step-by-step explanation:
7) 9% of x is the same as 0.09x, so you can write this:
x + 0.09x, where x is the price of the car
8) same thing for this one
x + 0.05x where x is the price of clothing
9) michael can eat cookies at a rate of 21 cookies per 6 minutes, or [tex]\frac{21}{6}[/tex]
Because he will be eating them at the same pace, you can write an equation and solve for the variable:
[tex]\frac{21}{6}[/tex] = [tex]\frac{32}{y}[/tex]
cross multiply the proportion:
21 × y = 32 × 6
solve:
21y = 192
y ≈ 9.14
It will take michael about 9.14 minutes to eat 32 cookies.
This works because they both simplify to 3.5 cookies per minute
[tex]\frac{21}{6}[/tex] = 3.5
[tex]\frac{32}{9.14}[/tex] = 3.5
