First, add up all the prices.
3.50 + 1.25 + .76 = 5.51
I tested a few numbers and I discovered that Mike bought 37 pencils.
5.51 * 37 = 203.87
Answer:
1. x = +/- 2
- 7
2. x =
+/- 
3. n =
+/- 
Step-by-step explanation:
1. Divide both sides by 2: (x + 7)^2 = 8
Square root both sides: x + 7 = +/- 2
Subtract 7 from both sides: x = +/- 2
- 7
2. Square root both sides: x - 3 = 
Since there is a negative inside the radical, we need to have an imaginary number:
. So, 
Add 3 to both sides: x =
+/- 
3. Divide by -5 from both sides: (n - 2)^2 = -2
Square root both sides: n - 2 = 
Again, we have to use i: 
Add 2 to both sides: n =
+/- 
Hope this helps!
778.5 Million in Scientific Notation is..
7.785 × 
It weighed 5 ounces. Subtract the first ounce from the total price then divide the remaining money by 0.21 to get four plus the first ounce.