Answer:
See below ~
Step-by-step explanation:
<u>(a)</u>
The point (8, 28) represents that in the time of 8 minutes, 28 cm of the horse trough has been filled.
- 8 <u>minutes</u> 28 <u>centimeters</u>
<u></u>
<u>(b)</u>
<u>Finding the unit rate</u>
- No. of centimeters / min.
- 28 cm / 8 min
- <u>3.5 cm/min</u>
9.50/1 = x/6.2
(Cross multiply)
9.50*6.2 = 1x
58.9 = x
She will earn $58.90 if she works for 6 hours and 12 minutes
Replace,
x = y
Or
x = f(x)
then us stay:
x = 5y + 12
Isolate 5y
5y = x - 12
Dividing both the sides by 5
y = x/5 - 12/5
Then, replace y = f^-(x)
f^-(x) = x/5 - 12/5
Hope this helps
First, make all the fractions have the same denominator. That would make 39/6 + 50/6. Then, just add the tops together, and your answer is 89/6.
Cross multiply then solve the equation.
