Ebony is x years old. Her brother is 4 years older.
Her Mum is 3 times her age.

Write an expression for the age of:
Her mum
Her brother

Ebony's brother is x + 4 years old.

Ebony's mum is 3x years old.

Since Ebony is x years old, and her brother is 4 years older than her, the expression is x + 4, as her brother is +4 years older.

Ebony's mum is 3 times Ebony's age, which is x. 3 times x is shortened into 3x.

45

step-by-step explanation:

a

step-by-step explanation:

strong negative correlation