20 Answer: a₁ = 4
<u>Step-by-step explanation:</u>

21 Answer: n = 13
<u>Step-by-step explanation:</u>

22 Answer: n = 5
<u>Step-by-step explanation:</u>

Hello there.
<span>
84 is 1/10 as much as
</span>
0.84
Answer:
880 minutes
Step-by-step explanation:
cost = 0.05(per minute) + basic fee
y = 0.05x + 15
59 = 0.05x + 15
subtract 15
44 = 0.05x
divide by 0.05
x = 880
Answer:
Step-by-step explanation:
x=24
KLN=30
MNL=90