What is the sum of 15h -0.5 and -3h +2k+23

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.

Write an inequality for this sentence the quotient of a number and -5 increased by 4 is at most 8

Y=21.95x+10 y=22.45x solve by substitution