Alyssa took a math test with 20 questions and she answered 16 questions correctly. in order get an a she needs to answer at least 90 percent of the questions correctly

she got 80% . in order to get 90% she would have had to get 18 questions right

Step-by-step explanation:

20=100%

2=10%

2×9=90%

18=90%

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: