Sabrina is using an online calculator to calculate the outputs f(n) for different inputs n. the ordered pairs below show sabrina's inputs and the corresponding outputs displayed by the calculator:
(1,6), (2,11), (3,16), (4,21)

which of the following functions best represents the rule that the calculator used to display the outputs?

a) f(n)= 5n-1

b) f(n)= 5n+1

c) f(n)= 4n+3

d) f(n)= 4n-3

Arrange the steps to solve this system of linear equations in the correct sequence. x + y = -2 2x – 3y = -9 tiles subtract 3x + 3y = -6 (obtained in step 1) from 2x – 3y = -9 (given) to solve for x. substitute the value of x in the first equation (x + y = -2) to get y = 1. the solution for the system of equations is (-3, 1). x = -15 the solution for the system of equations is (-15, 13). add 3x + 3y = -6 (obtained in step 1) to 2x – 3y = -9 (given), and solve for x. x = -3 substitute the value of x in the first equation (x + y = -2) to get y = 13. multiply the first equation by 3: 3(x + y) = 3(-2) 3x + 3y = -6.