First u have to find the area 11x3=33, 3x1=3, 3x2=6 sum=42
300 messages would have to be sent or received in order for the plan to cost same each month.
Step-by-step explanation:
Given,
Cost per month = $30
Per text sent or received charges = $0.10
Let,
x be the number of texts sent or received.
A(x) = 0.10x+30
A comparable plan costs = $60 per month
Text messages are unlimited.
B(x) = 60
For the two plans to cost equal;
A(x) = B(x)

Dividing both sides by 0.10

300 messages would have to be sent or received in order for the plan to cost same each month.
Keywords: function, addition
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2.63720930233 that is the answer
Answer:
d = 5
Step-by-step explanation:
The difference between consecutive terms is
13 - 8 = 8 - 3 = 5 ← common difference d