Simplify the expression. (−4k4j5)3(k3j3)7

Write a real-world solution that can be represented by the equation y = 7x be sure to explain what the variables represented in the solution

Solve the system of equations. y= 2x y= x^2 - 15

5× 1/2 = ? a) more than 5 because you are multiplying by a whole number b) 5/10 because you multiply the numerator and denominator by 5 c) less than 5 because you are multiplying by a number that is more than 1 d) less than 5 because you are multiplying by a number that is less than 1