Select the correct answer. The function RX) = 2x + 3x + 5, when evaluated, gives a value of 19. What is the function's input value?
A. 1

B. -1

C. 2

D. -2

E. -3

Correct option: C.

Step-by-step explanation:

(Assuming the correct function is R(x) = 2x^2 + 3x + 5)

To find the input value that gives the value of R(x) = 19, we just need to use this output value (R(x) = 19) in the equation and then find the value of x:

Solving this quadratic function using the Bhaskara's formula (a = 2, b = 3 and c = -14), we have:

So looking at the options, the input to the function is x = 2

Correct option: C.

do i do it on a graph?

step-by-step explanation: