Well, the equation would be 76*

or 76/4. Either works. 76/4 is 19. So Andy would be 19 years old.
I hope this helped :)
It would be -3 this is because you do rise/ run or y/x so you have 3/1 and it is a negative slope so -3
Answer:
If the underlined digit is 5 then it is Fifty thousand (50,000)