Mike was in charge of a special sports day at the Community Center. A company donated 50 boxes of ice cream bars, with 12 bars in each box. If 520 people had ice cream bars, how many bars were left?

80 ice cream bars were left

Step-by-step explanation:

50 × 12 = 600 so there was 600 ice cream bars altogether.

600 - 520 = 80

b: |12 – x| ≤ 0.25

step-by-step explanation:      

let x be the possible lengths in inches, of the ribbons jaime cut.

we have been given that jaime is cutting strips of ribbon for a project. he tries to cut each piece to be 12 inches long, but sometimes he cuts it too long or too short by as much as 0.25 inch.  

we can represent this information in an inequality as:

by the definition of absolute value function we will get,

upon combining our inequalities we will get,

therefore, the inequality   describes all the possible lengths (x), in inches, of the ribbons jaime cut.

step-by-step explanation: