She would have used 1200 messages in all by the month of August.
Step-by-step explanation:
Messages allowed per month = 150
There will be 8 months starting from January to August, therefore,
Time period = 8 months
Messages in 8 months = Messages per month * Time period

She would have used 1200 messages in all by the month of August.
Keywords: Multiplication
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$539 - $35 = $504
$504 : 12 = $42
Per month you pay $42.
I believe the answer would be x = - 7/4
Answer:
initial value is 21
Step-by-step explanation:
y=mx+b
6= -3(5) +b
b=21