Some plumbers charge a base rate plus an hourly rate for their services. The rates of two plumbers are shown in the table. To the nearest minute, at what amount of time does Plumber A become more expensive than Plumber B?

for finding the midpoint of any given 2 pair of points simply add the respective x coordinates with other x coordinate and the y coordinate with other y coordinate and divide them by 2

in your question it will be :

(3+1)/2 for the x coordinate of mid point i.e 2

[8+(-4)]/2 for the y coordinate of midpoint i.e 2

so coordinates of mid point of points (3,8) and (1,-4) will be (2,2)

imma say 16%. sorry if its wrong. i'm doing the same stuff right now

step-by-step explanation:

e^-kt = n/n0 = 0.79  

-kt = ln 0.79  

t = - ln 0.79/0.0001  

= 2357 years

step-by-step explanation:

im not sure what this means: mc011-7.jpg

step-by-step explanation: