Answer:
Perry first flight timing is 3 hour, 50 minute long.
that what I thinks of if my answer is different then the others- but I hope it helped. (alsoo sorry if it wrong-)
Step-by-step explanation:
<u><em>f(a):</em></u>
So for this you simply plug in "a" as x, and this doesn't really do anything beside replace all values with x, so you just have the equation:
![f(a) = 5a+4](https://tex.z-dn.net/?f=f%28a%29%20%3D%205a%2B4)
<u><em>2 f(a):</em></u>
So for this one, you want to represent f(a) using the equation it's equal to (5a + 4), and substitute it in for f(a). In doing so, you get the expression:
2*f(a) -> 2(5a + 4) -> 10a + 8
<u><em>f(2a):</em></u>
So this is very similar to the first question, although you will have to do some multiplication. So just plug in 2a as "x" to get the equation:
![f(2a) = 5(2a) + 4 = 10a+4](https://tex.z-dn.net/?f=f%282a%29%20%3D%205%282a%29%20%2B%204%20%3D%2010a%2B4)
<u><em>f(a+2):</em></u>
Basically the same process, you plug in (a+2) as "x" and simplify:
![f(a+2) = 5(a+2) + 4\\f(a+2) = 10a+10+4\\f(a+2) = 10a+14](https://tex.z-dn.net/?f=f%28a%2B2%29%20%3D%205%28a%2B2%29%20%2B%204%5C%5Cf%28a%2B2%29%20%3D%2010a%2B10%2B4%5C%5Cf%28a%2B2%29%20%3D%2010a%2B14)
<u><em>f(a) + f(2)</em></u>:
This is similar to the second question, and you simply want to replace the f(a) with the equation that represents it (5a + 4) and same thing for f(2) = 5(2) + 4
![f(a) + f(2) = (5a+4)+(5(2)+4) \\f(a) + f(2) = (5a+4)+(10+4)\\f(a)+f(2) = (5a+4) + (14)\\f(a) + f(2) = 5a+18](https://tex.z-dn.net/?f=f%28a%29%20%2B%20f%282%29%20%3D%20%285a%2B4%29%2B%285%282%29%2B4%29%20%5C%5Cf%28a%29%20%2B%20f%282%29%20%3D%20%285a%2B4%29%2B%2810%2B4%29%5C%5Cf%28a%29%2Bf%282%29%20%3D%20%285a%2B4%29%20%2B%20%2814%29%5C%5Cf%28a%29%20%2B%20f%282%29%20%3D%205a%2B18)
(-3,0) is your answer
Pls mark brainliest
Answer:
True
Step-by-step explanation:
if you really think about it you can use y for anything an dy is the most replaceable to have so i agree with your think hope it help man
It is irrational, because irrational numbers are ones that keep repeating at decimals and if you concert 43/99 to a decimal, it becomes 0.434343 and repeats on forever hope this helps you :)