Why is 15 not a prime number

A family of 2 adults and 3 kids go to a play. Admission costs $8 per adult and $5 per kid. What expression would show the total admission cost for the family?

An animal shelter has an ratio of dogs and cats thats 3:2. if there are 30 cats at the shelter, how many dogs are there?

Find two condecutive odd integers such that the smaller one is twelve more than one-third the larger

Write an algebraic rule to describe the translation P (-8, 6)

2) You can buy 3 apples at the Quick Market for $1.05. You can buy 5 of the same apples at Stop and Save for $1.15. Which place is the better buy? 765 How do I find the answer

What is the relationship between the domain of a function and the range of its inverse

Sterre charges $ 3 5 $35dollar sign, 35 to file tax returns, but files for free if she only needs the easiest form. Then she donates $ 2 $2dollar sign, 2 to clean water projects per tax return she files.

4x - y = 6 and 2x - y/2 = 4

He bought four violas for 40$ each. Later he bought one whistle for 100$. After that, he returned one viola. Write the total change to his funds as an integer

Alisa can ride her bike 2 miles in 7 minutes, how long would it take her to ride 10miles if she rides at the same rate?