Mary is y years old.
Write an algebraic expression in terms of y for the age of
A) her brother, who is 4 years older.
B) her mother, who is 3 times as old.
C) her sister, who is 2 years younger.
y + 4
y - 2
posted by Ms. Sue
y + 4
Think about it like this, if Mary had four brothers, she is Mary's age plus the age of 4 brothers, but we don't know it, so Y + 4 is good enough.
3y, because Mary had a little lamb that was 3.
And Y-2 because its her and 2 others who died in the car crash. Get it?
Good.posted by Abigail