Are the expressions equivalent? Usej = 3 and j = 8 to determine if they are. 76-2)
4-5
No, because when j = 8, the values of the expressions are different.
Yes, because when j = 3, the value of both expressions is 7 and when j = 8, the value of both expressions is 42.
Yes, because when j = 3, the value of both expressions is 7.
Yes, because when j = 8, the values of the expressions are different.

Scrub a dub toothbrushes are $4.00 each. there is a 10% discount, but there is also a 6% sales tax after the discount is applied. what is the new price after tax? round to the nearest penny

John used linear combination to solve the system of equations shown. he did so by multiplying the first equation by -3 and the second equation by another number to eliminate the x-terms. what number did jonas multiply the second equation by? 4x-6y=23x+5y=11

Jane is trying to decide how many tv shows she should watch tonight. she gets $10 of value from each tv show she watches. if she watches one show she gives up working on her math homework (which she values at $5). if she watches two, she also gives up her economics homework (which she values at $8). if she watches three then she also has to give up her biology homework (which she values at $12). using marginal analysis, how many shows does she watch? one