If you add or subtract two rational numbers, is the result sometimes, always, or never rational?

Suppose that there is a coffee shop in an office (Which also has interns). It is observed that out of the people that visit the coffee shop in a week 25% were female members, 40% were male members, 25% were female interns and 40% were male interns.

What is the value of x in the equation? 3 (x+6) = -18 0 - 36 0-33 0 - 24 0 - 18

Nora spent 6 minutes on the phone while routing 3 phone calls. If she routes 7 phone calls, how much time will Nora have spent on the phone in total? Assume the relationship is directly proportional.

Find the range of the function F (x) = (x-2) 2 + 2

Anastasia uses the equation p=0.7 (rh+b) to estimate the amount of take-home pay, p, for h hours worked at a rate of r dollars per hour and any bonus recived, b.

What are two different ways of factoring - 5x - 15? Select all that apply.

Graph the functions and approximate an x-value in which the exponential function exceeds the polynomial function. y = 4^x y = 7x^2 + 4x - 2 a. x=-1 b. x=0 c. x=.5 d. x=2

unit rate of 175 Calories in 12 ounces

What are the solutions to the following system? -2x+y=-5 y - -3x²+5 L

What is y - 5 (2 - y) = 8