Mr. keys made $90 in 5 hours. what’s the unit rate? a: $90:5h
b: 5 to 90
c: $1 in 18 hours
d: $18 per hour

am i right the answer is D!?

Evaluate the expression. (9 + 5)(3 + 2)0

Frank has a devised a formula for his catering business that calculates the number of meatballs he needs to prepare. the formula is m=4a+2c, where c=number of children; m=number of meatballs; a=number of adults. how many meatballs are required for a party of 10 adults and 5 children?

In september, louise planted a tree. every month, the tree louise planted grew 2 inches. what would the constant of proportionality of the line be?