I'll help you by giving you the answers to the first two, and showing you the steps. The equation is: f(x) = x² + 3 You're x = -4, what I'd do is plug that into your f(x): 0 = x² + 3 -4 = x² + 3 (subtract three on either side, to move it to the other side) -3-4 = x² -7 = x² Your answer is -4, -7 for the first one. Since it's inverse function, you just change the places of f(x) and x. I think, that's how I understand it...
The second one, is: f(x) = x² + 3 -3 = x² + 3 -3-3 = x² -6 = x² -3, -6.
I see a pattern, so it should be right. If you need help with the others to check your work, don't hesitate to ask. I hope I helped.
The least common multiple of 12 and 10 is 60. If he buys 5 snack bags and 6 juice boxes, he will have 60 of each. 12 goes into 60 5 times, and 10 goes into 60 6 times.
