Answer: B.) the slope of the function is 20
D.) it cost $20 per hour to repair a laptop
F.) a laptop that requires 4 hours of repair will cost $139
Step-by-step explanation:
The given function is [tex]c=20t+59[/tex] which represents the cost of laptop after t hours.
It is similar to the linear equation [tex]y=mx+a[/tex], where the slope of equation is m .
Therefore, the slope of the function is 20.
it means it cost $20 per hour to repair a laptop.
To find the x intercept, put c=0 in the equation, we get
[tex]0=20t+59\\\Rightarrow\ x=\frac{59}{20}\neq59[/tex]
To find the y intercept, put t=0 in the equation, we get
y=59
To find the cost after 3 years, put t=3 in the equation, we get
[tex]y=20(3)+59=60+59=\$119[/tex]
To find the cost after 4 years, put t=4 in the equation, we get
[tex]y=20(4)+59=80+59=139[/tex]
Answer:
B.) the slope of the function is 20
D.) it cost $20 per hour to repair a laptop
F.) a laptop that requires 4 hours of repair will cost $139
Step-by-step explanation:
