ACT Preparation / Unit 10 ACT 0903 short lesson, about 20 seconds
Function Values in Context
Captions available
The idea
In context, f(a) = b means the input a produces the output b, in the situation's units.
In practice
If C(h) is a repair bill in dollars after h hours, C(3) = 135 means three hours cost $135.
Where people slip
Keep the roles straight: the number inside the parentheses is the input; the number after the equals sign is the output.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Builds on
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