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 is not equal and I have no idea how to explain it
Answer: She bought 6 $5 magazines and 5 $4 magazines
Step-by-step explanation:
Answer:4
Step-by-step explanation: