Answer:
1st one
Step-by-step explanation:
=
−
2
±
1
0
√
3
69 + 15h = 39h
69 = 39h - 15h
69 = 24h
69/24 = h
2.875 hrs <======
69 + 15(2.875) = 39(2.875)
69 + 43.125 = 112.125
$ 112.125 = $ 112.125 <====
I didn't round anything.
59
pemdas
I think they're both trick questions because there are no like terms