Answer:
<h2>The maximum number of text messages is 372.8</h2>
Step-by-step explanation:
Given that the monthly cost is $39.99
and also $0.11 for each text (sent or recieved)
let y be the total cost
let x be the number of text
the model for the total cost is given as
y=3.99+0.11x
given that y=45
45=3.99+0.11x
45-3.99=0.11x
41.01=0.11x
divide both sides by 0.11
x=41.01/0.11
x=372.8
A.) The mean of the 8th and 9th values
Answer:
-18
Step-by-step explanation:
-18
