Answer:
The value of x is 
Step-by-step explanation:
we have
------> equation A
In this problem we have

Substitute the value of g(x) in the equation A and solve for x

Divide by
both sides


Adds
both sides


Answer:
The second one
Step-by-step explanation:
Answer: 1/10
Explanation: There are 10 discs in the bag so if you choose a 3 there is a 1 in 10 chance of you getting it
Answer: Base and Height
Step-by-step explanation: You would multiply the base and height. Since it is not a triangle you wouldn't divide it by 2