Anastasia is grocery shopping with her dad and wonder how much shopping is left to do. “We already have 60 percent of the items on our list,” her father says. There are 12 items in the cart. How many more items do Anastasia and her dad still have to buy?

8 items

Explanation:

12÷60=0.2

0.2×100=20

20-12=8

the linear speed of the car is 28.83 m/s

Explanation:

Given;

radius of the car, r = 0.33 m

angular speed of each tire, ω = 13.9 rev/s = 13.9 x 2π = 87.35 rad/s

The linear speed of the car is calculated as;

V = ωr

V = 87.35 rad/s x 0.33 m

V = 28.83 m/s

Therefore, the linear speed of the car is 28.83 m/s