U4L2 Day 3 Practice

A student rode a bike from school to a recreation center. The graph shows the student’s distance in miles from the recreation center after riding the bike for x miles. What is the domain of the situation?

Tags

CCSS.8.EE.B.5

For Sara’s birthday trip, she and her friends are renting a beach condo. The cost per person for the condo and gas can be found using the function c=56+9p. What is a reasonable range for this situation if there are at least 5 people but no more than 10 that can attend?

• {5, 6, 7, 8, 9, 10}

• {101, 110, 119, 128, 137, 146}

• 5 ≤ x ≤ 10

• 101 ≤ y ≤ 146

The daily cost of hiring a plumber, y, to work x hours on a repair project can be modeled using a linear function. The plumber charges a fixed cost of $80 plus an additional cost of $45 per hour. The plumber works a maximum of 8 hours per day.

For one day of work, what is the range of the function for this situation?

The number of ferryboat trips, f(c), needed to transport c cars in 1 day can be found using the function f(c)=c/20.

If there are no more than 5,000 cars transported by ferryboat daily, what is the range of the function in this situation?

• whole numbers from 0 to 5,000

• integers from 0 to 5,000

• Integers between 0 and 250

• whole numbers from 0 to 250

You are driving to Chicago. You are driving at a speed of 65 miles per hour.

What kind of numbers can you use for the domain here?

• all positive numbers; the hours just have to be ANY positive number

• all real numbers; the hours can be any number

• all positive WHOLE numbers since you can't drive for part of an hour

You are driving to Chicago. You are traveling at a speed of 65 miles per hour. The distance to Chicago is 254 miles.

What kind of numbers can you use for the range here?

• all positive numbers; the miles just have to be ANY positive number

• all real numbers; the miles can literally be anything, including decimals

• Any positive real number up to 254 miles. It stops at 254 because you would have arrived at Chicago.

   The total cost in dollars to buy uniforms for the players on a volleyball team can be found using the function c = 30u + 6, where u is the number of uniforms bought. If there are at least 8 players but not more than 12 players on the volleyball team, what is maximum range value?

• 246

• 300

• 336

• 265

The amount of change that you receive from a  $10 bill depends on the number of $2 tickets purchased. This can be modeled by the function , where x represents the number of tickets bought, and y, represents the amount of change received. What would be the range of this function?

• {0, 1, 2, 3, 4, 5}

• {0, 2, 4, 6, 8, 10}

Felipe is washing his dog in the bathtub. The tub starts out empty, but then fills with water at a rate of 8 gallons per minute. This can be modeled by the function . The maximum capacity of the tub without overflowing is 72 gallons. If the capacity of the bathtub is a function of the number of minutes the water is running, what would the domain be for this situation?

• {0, 1, 2, 3, 4, 5 ,6, 7, 8, 9}

• {0, 8, 16, 24, 32, 40, 48, 56, 64, 72}

A Plane can carry a maximum cargo weight of 160,000 pounds. A company uses one of these planes to ship 2,000-pound containers. The total cargo weight is a function of the number of the containers in the plane. The function y = 160,000-2000x can be used to determine the weight the plane has after, x, containers have been loaded.

What is the greatest value in the domain for this situation?

• 8

• 8,000

• 160,000

• 80