Functions (linear)

Daisy has $2000 in her bank account. She withdraws $45 per week to buy groceries. How much money would Daisy have in her account if she withdraws money for 4 weeks?

• $1,910

• $1,865

• $2,045

• $1,820

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Jaleel has a job mowing lawns in his neighborhood. He mows 5 lawns a month and makes $12 per lawn. Each month he spends $19 on gas. How much money does Jaleel make each month mowing laws?

• $41

• $31

• $2

• $17

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

A local bakery sells cupcakes for $2 each and cakes for $12 each. Which of the following equations represents the total cost, C, of buying x cupcakes and y cakes?

• C = 2x + 12

• C = 2x + 12y

• C = x + y

• C = 12x + 2y

Answer explanation

The total cost, C, can be found by multiplying the number of cupcakes (x) by their price ($2) and the number of cakes (y) by their price ($12), then adding the two products together. The correct equation is C = 2x + 12y.

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Braxus has $65 in his savings account. He plans to deposit $30 into his savings account each month.

Which expression could be used to find the amount of money Braxus will have in his savings account after x months of making deposits?

• 30 + 65 + x

• 30 + 65x

• 30x + 65

• 30x – 65

Tags

CCSS.6.EE.B.6

Problem #26 a

DOLPHIN: A dolphin eats 30 pounds of fish per day.

a. Select a function that relates the number of pounds p of fish that a dolphin eats in d days.

Tags

CCSS.HSF-BF.A.1A

Create an equation.
In math class, I started with 200 points. Each day, I receive 5 points. 

• y = 200x - 5
• y = 200x + 5
• y = -5x + 200
• y = 5x + 200

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Alyssa read 25 pages of a new book the first day she bought it. After the first day, she read 5 pages each day. Write an equation that can be used to determine how many pages y after x days.

• y = 5x

• y = 5x + 25

• y = 25x

• y = 25x + 5

Tags

7.10.A

Mary has a prepaid phone plan that charges 20 cents for each text and 15 cents per minute for calls. If Mary uses both text and talk, write an equation for the cost C of sending t texts and talking m minutes.

• C = 0.35tm

• C = 0.05m

• C = 20t + 15m

• C = 0.20t + 0.15m

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

A plumber charges $25 for a service call plus $50 per hour of service. What will be the total cost for 8 hours of work?

• $425

• $525

• $625

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Valley Video charges a $15 annual fee plus $3 per movie for rentals. Write an equation to represent this situation.

• y = $15 - 3m

• y = $15m + 3

• y = $15m - 3

• y = $15 + 3m

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2