What is the first step in solving the equation: 3(x+2) = 12? Group of answer choices
1.divide both sides by 3
2.subtract 12 from both sides
3.subtract 2 from both sides
4.multiply both sides by 3

The input to the function is x and the output is y. write the function such that x can be a vector (use element-by-element operations). a) use the function to calculate y(-1.5) and y(5). b) use the function to make a plot of the function y(x) for -2 ≤ x ≤ 6.