A, b and c are positive integers. a: b = 3:8 and b:c=6:11
Work out the smallest possible value of a + b + c

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.

What percent of 18 is 24? and plz explain thx.

Determine domain and range, largest open interval, and intervals which function is continuous.