â€‹Math Problems

1.Tina spent 3 dollars on socks 8 dollars on a shirt

and 15 dollars on a hoodie. If the sales tax is 6% then

what would the total be with the sales tax included?

A:47 dollars

B:27.56dollars

C:87 dollars

D:28 dollars

2.If the diameter 9.6 feet what is circumference?

3. In a school 50% of the students are younger than 10,

1/20 are 10 years old and 1/10 are older than 10 but

younger than 12,the remaining 70 students are 12 years

or older. How many students are 10 years old?

4.If the radius is 45in then what is the area?