Janet Swifteagle wants to purchase at least 20 minutes of computer time from a time-sharing computer company. She needs at least 7 minutes of time from
Computer A. The time-sharing company will rent Computer A only if the user agrees
also to rent Computer B for at least 5 minutes. The rent for Computer A is $500 per
minute and the rent for Computer B is $200 per minute. In order to minimize the
total cost, how much computer time should Janet buy on each machine?

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

the square root of what number? if you add that, then someone will probably answer the question.