5x-2+x-3+x-3 = 34
7x-8 = 34
7x/7 = 42/7
x = 6
I can not see your choices but I'm assuming that this equation is what you are looking for: 16t+vt+ho. The other equation 4.9t+vt+ho is used for meters. I apologize if those weren't your choices as once again I can not see them.
Answer:use a right triangle calc. On the web it does it for you and shows you how it got the answer.
Step-by-step explanation:
Greetings :)
To find slope of two points we will need to use this equation: 
( 6 , -12 ) ( 15 , -3 )
Now let's replace the equation with the numbers. (it will be a fraction).
= 
The equation equals 9 over 9, which also equals 1.
The slope of the line is 1.