Answer:
Step-by-step explanation:
x^2+8x+15
=x^2+(5+3)x+15
=x^2+5x+3x+15
=x(x+5)+3(x+5)
=(x+5)(x+3)
Yes, it is an irrational number because it can’t be written as a fraction
Negative square root of 35 is about -5.92, it can’t be written as a fraction
Rational number: can be written as a fraction
Irrational number: can’t be written as a fraction
I hope this helps!
<u>Answer:</u>
<u>Step-by-step explanation:</u>
We can use the following rule of surds to solve the problem:
,
which means that when multiplying two numbers with the same bases, we can simply add their powers while keeping the base the same.
Applying this rule:

⇒ 
⇒
The answer is c = .6x + 5
In order to find the equation, note that the price per pound is contingent upon the weight in x. Therefore, we can multiply the two together.
We also need to add the constant, which is 5.