Desmos Graphing Calculator

CalcReferenceCopy

Math·Algebra·Linear functions

easy

The function $f(x)=-40x+330$ gives the predicted height above the ground $f(x)$, in feet, of a model airplane $x$ minutes after it begins to descend. What is the predicted height above the ground, in feet, of the model airplane $2$ minutes after it begins to descend?

A

$80$

B

$250$

C

$290$

D

$410$