The cost of a television is $429.99 after sales tax is added. if the sales tax is 7.5%, what was the cost of the television before sales tax was added? (a) $377.74 (b) $389.46 (c) $397.74 (d) $399.99 (e) $459.27

i think it is everything has to equal 180 so, if i correct 4=c. 6=d. 8=a. 7=b. and the last question would be c. because they are parallel lines and they are congruent.

step-by-step explanation:

the reason everything has to equal to 180 is because that is how it works. i'm guessing that is its rule. 4 and 8 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 6 and 7 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 60+60 is 180. so, now you have your answer