The answer would be 49
7x1=7
7^2
7x7
49
Answer:
the original amount was 62
Step-by-step explanation:
You can use the part over whole formula like this:

why?
because we know that 10% = 10/100, we can easily find out the answer by cross multiplying
? * 10 (let's use x, instead of ?)
=10x
6.2 * 100
= 620
Now we have an equation that looks like this: 10x = 620
By using the inverse operation tool (dividing each side by 10 to isolate x) we have:
x (or ?) = 62
(x^2+3)/x to x=3:
(3^2+3)/3 = (9+3)/3 =12/3=4.
5(3x)+4=-10 i think that is the correct answer
1. Move the negative sign to the left.
- 
*-50
2. Use this rule: 

=
-
3. Simplify - 
4. Move the negative sign to the left.
-(-950x/8)
5. Simplify 950x/8 to 475x/4
6. Remove parentheses.