We have the following function

We want to know what is the value of f(x) when x is 19

If you have additional questions feel free to ask.
Hope this helps.
The third one
3(x+5) = 3 * x + 3 * 5
Find a common demoninator for example 6 because all of the denominators can go into 6 then you should find your answer quite easily when u add the fractions because all you have to do is add the numerator together to get to 2/3 (4/6)
Answer:
13 cm
Step-by-step explanation:
Use Pythagora's theorem to solve for the hypotenuse of the triangle:

Where a and b are the two shorter legs, and c is the hypotenuse.
Replace the values in and solve for c:

9514 1404 393
Answer:
A. 40.7%
Step-by-step explanation:
The selling price for a $5 profit will be ...
$12.75 +5.00 = $17.75
From $29.95, this represents a change of ...
(17.75 -29.95)/29.95 × 100%
= -12.20/29.95 × 100% ≈ -40.7346%
The bookstore can offer a maximum discount of about 40.7%.