Answer:
300 burgers
Step-by-step explanation:
You can set up an equation like this: 50+0.05x=20+0.15x
Then, subtract 0.05x from both sides: 50=20+0.10x
Subtract 20 from both sides: 30=0.10x
Divide by .10 on both sides: 300=x
X represents how many burgers must be sold for the boys to have earned the same amount of money, and that is 300 burgers.
Answer:
--- Running cost
--- Monthly income
71 cars
R1775
Step-by-step explanation:
Given
Expenses

per car
Income
per car
Solving (a): Expression for the running cost
This is calculated as:

Where
y = Total running cost
x = number of cars
So:


Solving (b): Expression for monthly income
This is calculated as:

Where
y = Total income
x = number of cars
So:


Solving (c): Break even
To do this, we equate the expressions in (a) and (b)


Collect Like Terms


Solve for x


Solving (d): How much to break even
Substitute 71 for x in any of (a) or (b)



<em>Solving (e): There is no question to answer on the "graph"</em>
Answer: y=6
Step-by-step explanation:
Data: y=3 and x=12
y=? and x=18
12/3=4 and 18/3=6
y=6
I hope this helps
The Sahara Desert, it hardly rain.