Lesson 2 linear function review

1. Suppose that the water level of a river is 34 feet and that it is receding at a rate of 0.5 foot per day. Write an equation for the water level, L, after d days. In how many days will the water level be 26 feet?

• The water level will be 26 feet in 19 days.

• The water level will be 26 feet in 16 days.

• The water level will be 26 feet in 10 days.

• The water level will be 26 feet in 22 days.

2. Seth’s father is thinking of buying his son a six-month movie pass for $40. With the pass, matinees cost $1.00. If matinees are normally $3.50 each, how many times must Seth attend in order for it to benefit his father to buy the pass?

• Seth must attend 13 matinees

• Seth must attend 20 matinees

• Seth must attend 15 matinees

• Seth must attend 16 matinees

3. A plumber charges $25 for a service call plus $50 per hour of service. Write an equation in slope-intercept form for the cost, C, after h hours of service. What will be the total cost for 8 hours of work? 10 hours of work?

• The total cost for 8 hours is $425

• The total cost for 8 hours is $358

• The total cost for 8 hours is $267

• The total cost for 8 hours is $50

4. A canoe rental service charges a $20 transportation fee and $30 dollars an hour to rent a canoe. Write and graph an equation representing the cost, y, of renting a canoe for x hours. What is the cost of renting the canoe for 6 hours?

• $341

• $376

• $200

• $230

Find X:

1x+16=36

-16 -16

__________

x=?

Find X:

425x = 850

Find X:

1x-13=10

Decide If its continuous or discrete and linear or exponential.

The freeway construction crew pours 300ft of concrete in a day

• Continuous/ exponential

• Discrete/

  exponential

• Continuous/ linear

• Discrete/ linear

Decide If its continuous or discrete and linear or exponential.

The average person takes 10,000 steps a day.

• Continuous/ linear

• Discrete/ linear

• Continuous/ exponential

• Discrete/ exponential

Whats the Discrete function?