Answer:
$307.50
Step-by-step explanation:
800 + (7/6) + (7x9)
800 + 1/1/6 + 63
= 864/1/6
(This us the possible calculation that I got)
Multiply should be done first before addition.
Answer:

Step-by-step explanation:
The computation of the water did Audrina drink altogether is as follows:

Now in a mixed fraction, it would be

Hence, the water did Audrina drink altogether is 
Slope intercept form:
y = mx + b
"m" is the slope, "b" is the y-intercept (the y value when x = 0)
Since you know the slope is 5, and the y-intercept is 0, you can plug it into the equation.
y = mx + b
y = 5x + 0 or y = 5x