80 points and brainliest for best ! one multiple choice ! which of the following exponential functions goes through the points (1, 20) and (2, 80)? f(x) = 5(4)−x f(x) = 4(5)−x f(x) = 5(4)x f(x) = 4(5)x

your answer should be c

were going to multiply th x axis points and y axis points and were going to add them

1x2 + 20 x 80

2 + 1600

1602

once u simplify it you'll get f(x) = 5(4)x

~batmans wife dun dun dun

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!