Ben purchased a shirt for x dollars. He has a coupon for 20% off the sale price and tax is 8.25%. (a.) Write and simplify an expression to represent the final price that Ben will pay for the shirt

Which linear equations have an infinite number of solutions? check all that apply.  (x  –  3/7)  =  2/7(3/2x  –  9/14)8(x  +  2)  =  5x  –  1412.3x  –  18  =  3(–6  +  4.1x)(6x  +  10)  =  7(x  –  2)4.2x  –  3.5  =  2.1 (5x  +  8)

Which number line represents the solution set for the inequality - x 24?

Aclassmate thinks that solving a system by graphing gives an exact answer when the lines appear to cross at a grid point, but only an approximate answer when they don't. explain why this isn't true.