Question

PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE HELP ME!!!!!!!! I HAVE 2 QUESTIONS THATS ALL. I WILL GIVE POINTS, FAN, MEDAL. PLEASE I AM SO BAD AT MATH PLEASE HELP HELP HELP!!!!!!!!!!!!!!!!!!!
Larry is using an online calculator to calculate the outputs f(n) for different inputs n. The ordered pairs below show Larry's inputs and the corresponding outputs displayed by the calculator: (1, 5), (2, 9), (3, 13), (4, 17) Which of the following functions best represents the rule that the calculator uses to display the outputs?

Select one:
a. f(n) = 5n − 1
b. f(n) = 5n + 1
c. f(n) = 4n + 1
d. f(n) = 4n − 1

Answer 1

F(n)=4n+1 seems to be the basic function for these sets.

Answer 2

F(x) = 4x + 1

Let's test it out.

f(1) = 4(1) + 1 = 4 + 1 = 5; (1,5)
f(2) = 4(2) + 1 = 8 + 1 = 9; (2,9)
f(3) = 4(3) + 1 = 12 + 1 = 13; (3,13)
f(4) = 4(4) + 1 = 16 + 1 = 17; (4,17)

So, your function is f(x) = 4x + 1