Basically here all you want to do it substitute the values x=1 and x=2 for the given function. Use your slope formula .
Do same for x=3 and x=4
You next divide plug in values in to this expression:
Answer: 1725
Step-by-step explanation: A= A+B/2 h= 50+65/2x30=1725
Answer:
Desmos . com / Calculator
Step-by-step explanation: Desmos is a website that will do that for you, I use desmos all the time. try it
Add up all the sides and you get 10