At appliance store, 37% of customers purchase a wahing machine. 11 % of customers buy both a wahsing machine . 11% of customers buy both waher and a dryer. Find the probability that a customer who buys a washer also buys a dryer

Can someone answer this question? : )

F(x) = x2 − 9, and g(x) = x − 3 f(x) = x2 − 4x + 3, and g(x) = x − 3 f(x) = x2 + 4x − 5, and g(x) = x − 1 f(x) = x2 − 16, and g(x) = x − 4 h(x) = x + 5 arrowright h(x) = x + 3 arrowright h(x) = x + 4 arrowright h(x) = x − 1 arrowright

How do you determine if an ordered pair is a solution to a given equation?