Answer:
Subtract 7 from both sides of the equation.
Substitute 5 for p to check the solution.
Step-by-step explanation:
Answer:
-0.80, -3/4, 0, 5/3, 2.5
Step-by-step explanation:
For this case we have the following system of equations:
Equaling the equations we have:
The variable y:
Thus, we can round the solution as:
It is verified with the graph
Answer:
Option C
The answer is 8/3 or 2 2/3
We are given the following data in tabulated form:
Call minutes, y Bill
Amount ($), x
125 75
150 85
175 95
200 105
We can see that for every 25 increase in call minutes,
there is a constant 10 increase in bill amount. Therefore the equation relating
the two variables is linear. The call minutes is y while the bill amount is x,
therefore:
y = m x + b
where m is the slope and b is the y-intercept
Calculating for the slope m:
m = (y2 – y1) / (x2 – x1)
m = (150 -125) / (85 – 75)
m = 2.5
So, y = 2.5 x + b
Calculating for b using the 1st pair:
125 = 2.5 (75) + b
b = - 62.5
So the final equation is:
y = 2.5 x – 62.5
To match, simply plug in the value of the bill amount ($)
as x in the equation and the answer will be y which is the call minutes.
