Question

Write a rule in function notation for the situation.The cost of membership is 21$ plus 5.50 each month

Answer 1

y = 5.50x + 21...where x is the number of months and y is the total cost

function notation is basically subbing in f(x) for y

so ur rule in function notation is : f(x) = 5.50x + 21 <==

Answer 2

y=$5.50(x) + $21    where x us the number of months  This will give you the total cost.