Answer:
Step-by-step explanation:
To evaluate f(4) substitute x = 4 into f(x)
f(4) = 5 × 
= 5 × 
=
Answer:
a 75x+165=y
b 75(3)+165=390
c 75x is the cost increasing for each hour
d y-intercept=165, it cost at least 165 for the parts
Step-by-step explanation:
2/(x-4)-1/(x+3)
(2(x+3)-1(x-4))/(x-4)(x+3)
(2x+6-x+4)/(x-4)(x+3)
(x+10)/(x-4)(x+3)
Answer:
Step-by-step explanation:
The equation of a linear function in point-slope form is y – y1 = m(x – x1)
The point is A (x1 , y1)
in this exercice : x1 = 3 and y1 =2
let A(3,2) B(-9,6)
the slope is : m = (YB - YA)/(XB -XA)
(6-2)/(-9-3) =4/(-12) = -1/3
the slope is m = -1/3
The equation is : y – y1 = m(x – x1)
y-2 =-1/3 ( x-3)
or : 3y-6 = -x+3
