Compare how you would model and record finding the sum and difference of two rocks weighing 2.8 pound and 3/8 pound? what's the answer I need help (yes I'm young) :| ​

If angle 2=3x +1 and angle 3=2x +4what is angle 2

Witch represents the inverse of the function f(x)=1/4x-12

Suppose you are an avid reader and are looking to save money on the cost of books instead of paying about $20 for each book, you decide to look into purchasing a kindle for $120 you can purchase e-books for about $5 each 1. find the slope-intercept equation for the cost of the hard copy of books using x to represent the number of books 2. find the slope-intercept equation for the cost of the kindle with cost of e-books using x to represent the number of books