Functions

The student government association is selling roses for Valentine’s Day to raise money for their trip to the state convention. The cost of each rose is $1.50 and the florist charges a delivery fee of $25. The class plans to sell the roses for $5 each. How would you define the variable?

• x= delivery

• x= number of roses

• x= cost

• x= students

The student government association is selling roses for Valentine’s Day to raise money for their trip to the state convention. The cost of each rose is $1.50 and the florist charges a delivery fee of $25. The class plans to sell the roses for $5 each. What is the cost function?

• c(x)= 1.50x + 25

• c(x)= 1.50 + 25x

• c(x)= 5.00x + 25

• c(x)= 1.50x + 5.00x + 25

The student government association is selling roses for Valentine’s Day to raise money for their trip to the state convention. The cost of each rose is $1.50 and the florist charges a delivery fee of $25. The class plans to sell the roses for $5 each. What is the revenue function?

• r(x)= 1.50x + 25

• r(x)= 5.00x-(1.50x + 25)

• r(x)= 5.00x + 25

• r(x)= 5.00x

The student government association is selling roses for Valentine’s Day to raise money for their trip to the state convention. The cost of each rose is $1.50 and the florist charges a delivery fee of $25. The class plans to sell the roses for $5 each. What is the profit function?

• p(x)= 1.50x + 25

• p(x)= 5.00x + 25

• p(x)= 5.00x-(1.50x + 25)

• p(x)= 5.00x

When you ___ functions, you perform operations (adding, mulitplying).

• combine

• compose

• write

• perform

When you ___ functions, the output of 1 function becomes the input for another function.

• combine

• compose

• write

• perform

A local group is selling t-shirts to raise funds. They plan to sell 2500 t-shirts for $10. They consider raising the t-shirt price in order to earn more profit. For each $1 increase, they will sell 100 fewer t-shirts. Let x represent the number of $1 increases.

What function would represent the cost of one t-shirt based on the number of increases?

• c(x)= 10 + x

• c(x)= 10x

• c(x)= 10 + (x-100)

• c(x)= (2500 +10)( x-100)

A local group is selling t-shirts to raise funds. They plan to sell 2500 t-shirts for $10. They consider raising the t-shirt price in order to earn more profit. For each $1 increase, they will sell 100 fewer t-shirts. Let x represent the number of $1 increases.

What function would represent the number of shirts sold based on the number of increases?

• t(x)= 2500x-100x

• t(x)= 2500+10x + 1-100x

• t(x)= 2500-100x

• t(x)= 2500x-100

Anna gets paid $8.75/hour working as a barista at Coffee Break. Her boss pays her $9.00/hour for creating the weekly advertisement signs. She works a total of 25 hours each week. Let x represent the hours that Anna works each week as a barista.

Which function represents the amount of money that Anna earns working as a barista?

• h(x)= 8.75x + 9.00x

• h(x)= 8.75x + 25

• h(x)= 25x + 8.75x

• h(x)= 8.75x

Anna gets paid $8.75/hour working as a barista at Coffee Break. Her boss pays her $9.00/hour for creating the weekly advertisement signs. She works a total of 25 hours each week. Let x represent the hours that Anna works each week as a barista.

Which function represents the hours that Anna works creating signs?

• f(x)= 25 + x

• f(x)= 25 - x

• f(x)= 25x

• f(x)= 9.00x + 25