Solving Real World Equations

Is this a function or not?

• Function

• Not a Function

Cristy had $24 to spend on seven pencils. After buying them she had $10. How much did each pencil cost?

• $2

• $3

• $4

• $5

Zaniah bought 7 boxes of cookies. A week later half of all her boxes were destroyed in a fire. There are now only 22 boxes left. With how many did she start?

• 37

• 35

• 36

• 38

Will spent half of his weekly allowance playing mini-golf. To earn more money his parents let him wash the car for $4. What is his weekly allowance if he ended with $12?

• $16

• $14

• $12

• $10

How old am I if 400 reduced by 2 times my age is 244?

• 78

• 80

• 76

• 82

Julian sold half of his comic books and then bought sixteen more. He now has 36. With how many did he begin?

• 40

• 36

• 32

• 44

Leah won 40 bouncy balls playing horseshoes at her school's game night. Later, she gave two to each of her friends. She only has 8 remaining. How many friends does she have?

• 16

• 14

• 12

• 10

The popularity of Twitter can be measured using the number of active accounts. In January of 2015, Twitter had approximately 302.5 million active accounts worldwide. Each year, the number of active accounts has increased by about 10.2 million.

Write an equation to represent this situation

• 𝑎 = 10.2𝑛 + 302.5

• 𝑎 = 302.5𝑛 + 10.2

• None of the above

The popularity of Twitter can be measured using the number of active accounts. In January of 2015, Twitter had approximately 302.5 million active accounts worldwide. Each year, the number of active accounts has increased by about 10.2 million. Write a one-variable equation that can be used to determine the year Twitter will have 425 million active accounts if the trend continues

• None of the above

Assuming the trend continues, write a one-variable equation that can be used to find the average flash storage capacity of smartphones in 2025.

Solve your equation *CHALLENGING, ADD THE YEAR DIFFERENCE TO THE SLOPE VARIABLE THEN SOLVE*