Write that as 7x. Writing it as x7 could lead to confusion. 7*x would be OK.
F(x)=2x+1
you can use a table of values for a diagram and graph the line
So :

?
First, you want to bring everything together on the top of the fraction.
12=24/2 so you can have

Add like terms -- 12 +24 = 36

Now we are at

Which is the lowest possible simplified version while remaining at exact value.
Feel free to check my math! I kinda did this off the top of my head.
Answer: The only force on it is its weight, w=9800N
Step-by-step explanation: