Problemas
The phone company Ringular has a monthly cellular plan where a customer pays a flat monthly fee and then a certain amount of money per minute used on the phone If a customer uses 370 minutes, the monthly cost will be 176. If the customer uses 690 minutes, the monthly cost will be 304. A) Find an equation in the form y=mx+b where z is the number of monthly minutes used and y is the total monthly of the Ringular plan. Answer: 1 = y=0.4x+28 B) Use your equation to find the total monthly cost if 692 minutes are used. Answer: If 692 minutes are used, the total cost will be square dollars. Question Help: Video
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Ana
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Respuesta
To find the equation in the form
, we need to determine the slope (m) and the y-intercept (b).Given:- When 370 minutes are used, the monthly cost is
304.We can use these two points to find the slope (m):
Now, we can use one of the points to find the y-intercept (b). Let's use the point (370, 176):
So, the equation in the form
is:
B) To find the total monthly cost if 692 minutes are used, we can substitute x = 692 into the equation:
Therefore, if 692 minutes are used, the total cost will be $304.8 dollars.