Students,

Here is today’s Mathematics review. Do this assignment on lined paper. Work with your friends and see if you’ve come up with the right solutions. Test tomorrow.

More review questions for tomorrow’s test . . .

1) Joe buys movie tickets over the telephone. Tickets cost $6.90 each, plus a $1.25 service charge for the order.

a) Create an equation that represents this scenario. Define your variables.

b) How much would it cost to purchase four tickets?

c) If you spent $42.65 on a phone order, how many tickets did he purchase?

2) The food energy required by a cross-country skier can be modeled with the equation E = 3800 – 25T.

E represents the amount of food energy, in calories, and T represents the temperature in degrees Celsius. At which temperature does the skier require 5,200 calories of energy? Round to nearest tenth.

3) The equation R = 11T – 55 models the chirping rates of crickets at various temperatures. The variable R represents the number of chirps per minute, and T represents the temperature in degrees Celsius.

a) When the rate is 77 chirps per minute, what is the temperature?

b) What is the chirp rate when the temperature is 19 degrees Celsius?

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