You didn’t give us the answer choices.
Answer:
robert is 12 years old
Step-by-step explanation:
robert's age=x
40=3x+4
that's the equation
40=3x+4
=36=3x
x=12
Answer:
It would cost $18 to ride the taxi 10 miles.
Answer:
add
Step-by-step explanation:
increased is another word for add