Macy currently has a balance of $3,418.82 in an account earning simple interest. Eighteen years ago she opened the account with
1 answer:
You might be interested in
Answer:
y = 48
Step-by-step explanation:
given y is directly proportional to x then the equation connecting them is
y = kx ← k is the constant of proportionality
To find k use the condition y = 36 when x = 30
k = =
=
y = x ← equation of proportionality
When x = 40 then
y = × 40 = 48