If Eugene can buy three cantaloupes for $7. Then how many can you buy with $14 If anyone could help me please on number 4

Suppose a least-squares regression line is given by modifyingabove y with caret equals 4.302 x minus 3.293. what is the mean value of the response variable if xequals20?

Agroup of three friends order a combo meal which includes two slices of pizza and a drink each drink is priced at $2.50 the combined total of $31.50 how much is the cost of a slice of pizza

In the equation sqrt(n+5)-sqrt(11-10)=1. what is the value of n