Unit 4 Lessons 1-6 Review

Write the following solution in set builder notation:

All values greater than or equal to -2

• { x | x ≥ 2 }

• { x | x ≥ -2 }

• { x ≥ -2 }

• { x | x ≤ -2 }

Tags

CCSS.HSA.REI.B.3

Write the following solution in set builder notation:

all values greater than 10

• { y > 10 }

• { y | y > 10 }

• { y | y < 10 }

• ( -0, 10 )

Tags

CCSS.6.EE.B.8

As x values increase, y-values

​ (a)  

• decrease
• increase
• stay the same

Tags

CCSS.HSF-LE.A.1B

Determine the y-intercept (type in only the y-value!)

Tags

CCSS.HSF.LE.B.5

Determine the x-intercept (type in only the x-value!)

Tags

CCSS.HSF.LE.B.5

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?

Tags

CCSS.HSA.CED.A.3

CCSS.HSA.CED.A.1

CCSS.HSA.REI.B.3

CCSS.HSA.CED.A.2

The height in inches of concrete being poured for a foundation can be found using the function y=15+2.5x, where x is the number of minutes. If the concrete is poured between 5 and 10 minutes, find the domain and range of this situation.

• Domain: {5, 6, 7, 8, 9, 10} Range: {28, 29, 30, ..., 40}

• Domain: {28, 29, 30, ..., 40} Range: {5, 6, 7, 8, 9, 10}

Tags

CCSS.HSA.CED.A.3

CCSS.HSA.SSE.A.1

Mae worked at a summer camp where she earned $20 plus $7 an hour each week. The amount of money she earned each week, e, is a function of the number of hours she works, h. Mae could not work more than 20 hours each week.

What is the domain/range? Note: Mae can work part of an hour.

• Domain: {0, 1, 2, 3, ..., 20}

  Range: {20, 27, ..., 160}

• Domain: {20, 27, ..., 160}

  Range: {0, 1, 2, 3, ..., 20}

Tags

CCSS.HSA.CED.A.3

CCSS.HSA.SSE.A.1

CCSS.HSA.CED.A.1

Leslie's car travels about 25 miles per gallon of gas.

This situation can be represented by function f(x) = 25x

Her car needs 14 gallons of gas to be full. What is a reasonable RANGE?

Tags

CCSS.HSA.SSE.A.1

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 DOMAIN of the function for this situation?

Tags

CCSS.HSF.IF.B.5