139 + 30d = 13 + 51d
139 - 13 = 51d - 30d
126 = 21d
126/21 = d
6 = d
now lets check..
139 + 30d = 139 + 30(6) = 319
13 + 51d = 13 + 51(6) = 319
so on day 6, they will both cost $ 319
Answer:
0,42
that should be the answer
Answer:
i pick my answer as 3
Step-by-step explanation:
7-4=3
For a , C= 18.85
for b , C= 21.99
for 1 , C= 75.4
for 2 , C= 87.96
Answer:
I’m pretty sure it’s -2xy if it’s not I’m really sorry
Step-by-step explanation:
4-6=-2+xy=-2xy
