The school band will sell pizzas to raise money for new uniforms. the supplier charges $100 plus $4 per pizza. if the band members sell the pizzas for $7 each, how many pizzas will they have to sell to make a profit?

Galen sold tickets of his church’s carnival for a total of $2,820. children’s tickets cost $3 each and adult tickets cost $5 each. the number of children’s tickets sold was 30 more than 3 times the number of adult tickets slod. how many children’s ticket and how many adult tickets did he sell?

What numbers are included in the set of integers? what numbers are not included?

Is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis.