Exercise 1:
The exponents are wrong: when you divide two power, you subtract the exponents:
Exercise 2:
The function represents a growth rate of 300%! 3% is actually written as 0.03, so the correct function is
Exercise 3:
To factor a quadratic equation, we have to find the roots. Once you have the roots 
, you can factor the expression as 
In this case, the solutions are 
, which yields the factorization
Exercise 4:
When you multiply two powers of the same base, you add the exponents:
So, in your case, you have
It will take him 10 because 125*10 is 1250(12.50)
Answer:
one
Step-by-step explanation:
for general form : ax²+bx+c=0
delta = b²-4ac
so for this example delta is 8²-4×2×8 =0
we know if delta = 0 , we have just one real number solution
so the answer is 1
Answer:
Lenght = 13, Width = 4
Step-by-step explanation:
Perimeter:
2(L + W) = 34
=> 2L + 2W = 34
Area:
L * W = 52
L = 2W + 5
L - 2W = 5
----------------------------
How to find the Length:
Now Add:
2L + 2W = 34
+ L - 2W = 5
-------------------------
3L = 39
L = 13
How to find the Width:
L * W = 52
13 * W = 52
W = 4
======================
Length = 13
Width = 4
