Answer:
The first thing we must do for this case is to define variables:
d = number of days
We then have the following inequality that represents the problem:
9d + 10 <= 146
Answer:
An inequality that represents the number of days, on which Natalie can take classes is:
9d + 10 <= 146
Step-by-step explanation:
Answer: Lowest 3, 5 and 7 Highest.
Step-by-step explanation:
Add x +x+2+x+4=5(x)
Add Like Terms: 3x+6=5x
Subtract 3x from 3x and 5x.
Should look like this: 6=2x
Divide 2 from both sides. : 3=x
x=3
x+2=5
x+4=7
Given:

To find:
The LCD of the fractions.
Solution:
LCD means least common denominator.
Let us find the least common multiplier for the denominator.
The denominators are
.
Factor
:

Take a common in first 2 terms and -6 common in next two terms.

Take out common factor (a - 1).
------------- (1)
Factor
:

Using identity: 
------------- (1)
From (1) and (2),
LCM of 
Therefore LCD is (a - 1)(a - 6)(a + 6).