A cell phone provider offers a plan that costs $40 per month plus $0.20 per text message sent or received. A comparable plan costs $60 per month but offers unlimited text messaging. a. Set up a system of equations that represents this situation.

b. Graph your equations on a coordinate grid.

c. Using your graph, determine how many text messages you would have to send or receive in order for the plans to cost the same each month. Explain how you know this.

d. Using your graph, if you send or receive an average of 50 text messages each month, which plan would you choose? Explain why.

Errrm I guess I can try to answer this...

Step-by-step explanation:

$40 PER month PLUS $0.20 per text. A comparable plan costs $60 per month but offers unlimited texts.

Well that kinda depends on how many sent and recieved so Ima just say X is that number.

40 x 12 = 480

.20 x (X) = .20x

So the numbers we have to work with are 480 and .20x.

U I guess just try to work with that. Sorry. I want to help but can't really figure this equation out myself! UnU sorry dude.

answer: 819.89 miles across america

step-by-step explanation:

d. 24+-0.114

step-by-step explanation:

the question requires us to calculate the approximate 95% confidence interval for the mean number of ounces of ketchup per bottle in the sample given the following statistics;

sample mean = 24

standard deviation, σ = 0.4

sample size , n = 49

the confidence interval for a population mean is calculated using the formula;

sample mean ± z-score*(σ/sqrt(n))

the z-score associated with a 95% confidence interval, from the standard normal tables, is;

1.96

substituting these values into the formula;

24 ± 1.96*(0.4/7)

= 24 ± 0.112

from the alternatives given, choice d is closest to the above expression;