An iPhone repair shop changes a service fee of $20 plus $32 for each hour it takes to complete the repair. Let y represent the number of hours write a linear equation that represents this situation

Let the closed interval [a , b] be the domain of function f. the domain of f(x - 3) is given by (a) the open interval (a , b) (b) the closed interval [a , b] (c) the closed interval [a - 3 , b - 3] (d) the closed interval [a + 3 , b + 3]

Consider the function represented by the equation 1/2 j + 1/4 k equals 3 which shows the equation written in function notation with j as the independent variable

How do you use the elimination method for this question? explain, because i really want to understand!