Answer: 71.1minutes
Step-by-step explanation:
From the question, we were given monthly cost of calls and amount of call per minute.
To express the monthly cost in terms of minutes of call time will be :
Monthly cost = call per minute x f
Let minutes of call time be f
13.5= 0.19 x f
13.5 = 0.19f ....divide both sides by 0.19
f = 13.5/ 0.19
f= 71.1 minutes
Is that a 0 or a degree sign in the top corner after both sets of parenthesis, becasue if that is a zero, what I have in mind on how to solve this is completely wrong.
The answer is choice b.
check your answers by plugging numbers know for x.
y=x-4
if x is 4, y=4-4
y=0
y=x-4
If x is 5, y=5-4
y=1
which is valid based on the graph.
hope this helps.
Answer:
i may need more info on the temperature or do you have to find out
Step-by-step explanation: