Question

each month kadens phone charges a flat fee of $12 plus $0.05 per minute. his bill for last month was $18. which equation represents this situation if x = the number of minutes the phone is used?\
\
$x(12 + 0.05) = 18$\
$12x + 0.05 = 18$\
$12x + 0.05x = 18$\
$12 + 0.05x = 18$

Explanation:

Step1: Analyze the cost components

The flat fee is $12, and the cost per minute is $0.05. If \( x \) is the number of minutes, the cost for the minutes used is \( 0.05x \).

Step2: Form the total cost equation

The total bill is the flat fee plus the cost for the minutes used. So the equation is \( 12 + 0.05x = 18 \).

Answer:

\( 12 + 0.05x = 18 \) (the fourth option: \( 12 + 0.05x = 18 \))