After moving into a new house, a couple wants to have a concrete patio poured to support a hot tub, because... well, because it's a hot tub. The plans call for a 6 ft by 17 ft slab of concrete 8 inches thick. which has a total volume of 2.52 cubic yards. The contractor estimates the amount needed at 3 cubic yards.

Find the percent error in the estimate compared to the actual amount of concrete needed.
Round to the nearest tenth of a percent.
a) The percent error in the estimate compared to the actual amount of concrete needed is __%

pay attention in your classes and concentrate the best thing you can do to raise your test scores is to pay attention when you're supposed to be learning the material: in class!

take good notes.

do your homework.

use mnemonics and other tricks.

do practice tests.

note: the best i know.

step-by-step explanation:

descending order means to order the polynomials from the term with the largest exponent to the term with the smallest exponent.  

therefore, the correct answer is d.  

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: