Answer:
y+30
Step-by-step explanation:
the sum of the numbers is 15y
the new sum after increase each number by 30 is 15y+450
the new mean 15y+450/15
= y+30
Answer:
x+10
Step-by-step explanation:
Answer:
Morgan, its a straight line and it goes through the origin
Step-by-step explanation:
5 because 25 divided by 5 is 5