Answer:

Step-by-step explanation:
We are given the two functions:

And we want to find:

Recall that this is equivalent to:

Substitute. Hence:

Expand if desired:

Answer: 2.66 hours
Step-by-step explanation:
Shawana can paint a fence in 8hours which means in one hour she can paint 1/8 of a fence.
Kevin can paint the same fence in 4 hours, so in one hour he can paint 1/4 of the fence.
Together in 1 hour they can paint 1/8 + 1/4 = 3/8
Total hours for painting is 3/8 or 2.66 hours
Answer:
y = -5/6x - 4/3 (slope-intercept form)
Step-by-step explanation:
<u>From my understanding, we have to convert this equation into slope intercept form.</u>
<em>Slope-intercept form: y=mx + c</em>
<em>where m is the slope and x is the y-intercept</em>
5/8x+3/4y=-1
<em>Make y the subject</em>
3/4y = -1 - 5/8x
3y = -4 - 5/2x
y = -4/3 - 5/6x
y = -5/6x - 4/3 (slope-intercept form)
Slope or m = -5/6
y-intercept or c = -4/3