Review #1: Interpreting Function Notation

Front

What does the function B(x) = 8x + 25 represent?

Back

The cost (in dollars) of renting a bicycle for x days.

Front

How do you calculate the cost of renting a bicycle for 5 days using B(x)?

Back

B(5) = 8(5) + 25 = 65. The cost is $65.

Front

What does R(1.5) = 3 mean in the context of rainfall?

Back

After 1.5 hours, 3 cm of rain has fallen.

Front

What does the function g(x) = 3x + 4 represent?

Back

The price charged for x packages of bubble gum.

Front

How do you find g(8) using the function g(x)?

Back

g(8) = 3(8) + 4 = 28. This means that 8 packages of gum cost $28.

Front

What does the function F represent in the context of distance traveled?

Back

The distance a car traveled after h hours.

Front

What does G(h) = 55h represent?

Back

The distance traveled by a second car after h hours, at a speed of 55 miles per hour.

Front

How do you compare distances traveled by two cars after 4 hours?

Back

Evaluate F(4) and G(4) to see which is greater.

Front

What does S(7) represent in the context of a babysitter's salary?

Back

The salary of a babysitter who worked 7 hours.

Front

What is the general form of a linear function?

Back

f(x) = mx + b, where m is the slope and b is the y-intercept.