Answer:
Equation: c = 100 + 5a
Answer: $130
Step-by-step explanation:
100 + (5 * 6)
100 + 30
$130
Answer:
Yes
Step-by-step explanation:
To find out whether or not a graph is a function, we can do the vertical line test. If the vertical line only touches one point, then the graph is a function. This is because in a function, an input can only have one output.
Answer:
1 hour and 30 minutes (1.5 hours)
Step-by-step explanation:
$25 per hour is our slope and $25 call fee is our y-intercept.
We can write a linear function in slope-intercept form like this:
![y=mx+b](https://tex.z-dn.net/?f=y%3Dmx%2Bb)
Where m is your slope, y is the total cost, x is the hours worked b is your y-intercept. Therefore using the information above we obtain:
![y=25x+25](https://tex.z-dn.net/?f=y%3D25x%2B25)
Since the bill comes out to be $62.50 that means that y=62.50 by substituting that value we have to solve for x since x is the amount of hours worked we obtain:
![62.50=25x+25\\\\62.50-25=25x+25-25\\\\37.50=25x\\\\\frac{37.50}{25} = \frac{25x}{25}\\\\1.5=x](https://tex.z-dn.net/?f=62.50%3D25x%2B25%5C%5C%5C%5C62.50-25%3D25x%2B25-25%5C%5C%5C%5C37.50%3D25x%5C%5C%5C%5C%5Cfrac%7B37.50%7D%7B25%7D%20%3D%20%5Cfrac%7B25x%7D%7B25%7D%5C%5C%5C%5C1.5%3Dx)
Since x = 1.5 this means that the plumber worked for one and a half hours or 1 hour and 30 minutes.
Answer:
65 meters
Step-by-step explanation:
you add all the side/numbers together