The first thing we must do for this case is to define variables:
x: text messages
Y: pictures
We write the system of equations:
0.05x + 0.10y = 4
x = y + 5
Solving the system we have:
x = 30
y = 25
Answer:
you send:
30 text messages
25 pictures
The unit rate would be 1 3/7 ÷ 2/3 10/7 ÷ 2/3 10/7 · 3/2 separate<span> by </span>division<span>, </span>rearrange<span> and multiply 15/7
Charlies reads</span><span> 15/7, or 2 1/7, page per </span>minute.
Hope this helps a bit.
Answer: 
Step-by-step explanation:
1. By definition, you have if 
, then 
2. Keeping this on mind, you must follow the proccedure shown below:
- You have that:
Where:
- Substitute values into . Then, you obtain:
Answer:
Answer:
50.2
Step-by-step explanation:
Answer:
B. (12-6) n - 50
Step-by-step explanation:
Given that:
Cost of making hat = $6 per hat
Selling price = $12 per hat
Advert cost = $50
Number of hats made = n
The profit or money raised from the sales of hat:
Total Revenue from sales - total cost of production - advert cost
Total Revenue from sales = ($12 * n) = $12n
Total cost of production = ($6 * n) = $6n
Advert cost = $50
Hence,
12n - (6n + 50)
12n - 6n - 50
(12 - 6)n - 50
