Tracy is taking advantage of a 25% off sale to buy a new coat. If the coat's sale price is $135, what was the original cost?

Step-by-step explaination

First you want to make a percent porportion so that you can find the unknown value. 135 = 25% Solve it and you'll get your answer.

                           ?     = 100%

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: