Answer:
a) 
b) 
Step-by-step explanation:
Use logarithm properties:

Then
a) 
b) 
9x² - 49
(3x)² - (7)²
= (3x + 7)(3x - 7)
This type of factoring is called Difference of Two Squares
where x² - y² = (x + y)(x - y)
A rational number is a number that can be written as a fraction or "ratio".
It includes the set of integers because all of them have a denominator of 1. A rational number can take on the form of

where b ≠ 0. Terminating and repeating decimals are rational numbers because they too can be written as a ratio; for example, 0.3 =

or 0.3333... =

.
The first step to solve this problem is to convert the first mixed number to an improper fraction.

÷ 3 +

Dividing is equivalent to multiplying with the reciprocal value,, so next you will need to change the signs.

x

+

Multiply the fractions

+

Finally,, add the two fractions together to get your final answer

This means that the correct answer to your question is

.
Let me know if you have any further questions
:)
Answer:
Step-by-step explanation:
100(1.35(0.8)p-p)/p=8%
Since this is positive the dealer makes an 8% profit.