Question

Anyone willing to help me study some math for my exam tomorrow? Please and Thank you:)
(I will ask questions below)

Answer 1

I'll help if I can.

Answer 2

I need to know how to find the Domain for this equation.
\[f(x)=\sqrt{13-x}\]

Answer 3

sure but what kind of math

Answer 4

College Algebra:)

Answer 5

sure then you need help on finding the domain? How would you start?

Answer 6

By taking the square root off?

Answer 7

mmm yes and no, so finding the domain just really means finding the range of x's where y is a real number right?

Answer 8

Correct

Answer 9

How could I begin by doing that?

Answer 10

so what can't be under the sqrt?

Answer 11

Negatives

Answer 12

correct so in other words: \[13 - x > 0\] right?

Answer 13

is it not \[13-x \ge0\]

Answer 14

oh sorry yes you are correct!

Answer 15

Okay, \[13-x \ge 0\]
subtract -13both sides, I get -13 and then divide it by -1 which would be positive 13

Answer 16

Will my sign change to less than? like this >