Answer:
12
Step-by-step explanation:
write it out:
3/7 x x/28
cross-multiply and solve:
3*28 and 7x
3 x 28 = 84
make an expression:
84 = 7x
solve the expression:
7x/7 = 1
84/7 = 12
x =12
we have

step 1
Multiply by 2 both sides

step 2
Group terms

Combine like terms

divide by 2 both sides

Verify
substitute the value of x in the original expression

is ok
the value of x satisfy the equation
Answer:
f(x)=2
Step-by-step explanation:
the bottom of the graph is x and the two lines up to the dot.
Answer:
Step-by-step explanation:
B is the answer