One text message sent or recieved
$50 per month
$30 per month
50 - 30 = 20
It is 20$ per text in the first plan there for one text either sent or recieven would make the first plan 50$ making the plans equal in cost
Answer:
C. a n =3000(1.05)n-1
Step-by-step explanation:
Arithmetic sequence formula, it is 1.05 because it increases by 1/20th each time. It is n-1 because n-1 is the correct form of arithmetic sequence formulas, without the n-1 it wouldn't work.
Answer:
152
ΔY = 436 - 132 =304
Δ X = 6-4 = 2
ΔY/X = 304/2 = 152
Step-by-step explanation:
Answer:
Im not sure about Q1 but I'll help with Q2
9 =

8 =
![\sqrt[3]{512}](https://tex.z-dn.net/?f=%20%5Csqrt%5B3%5D%7B512%7D%20)
14 =

2 =
![\sqrt[3]{8}](https://tex.z-dn.net/?f=%20%5Csqrt%5B3%5D%7B8%7D%20)
4 =

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Step-by-step explanation:
the sequence is arithmetic due to the common difference that is equal
d=11-15=7-11=-4
a(n) = a1 +(n-1)d
a1=15
Then :
a(n) = 15+(n-1)-4
hope this helps