# Tony operates a skate rental company. He charges an equipment fee of $3 plus$6 per hour. Which equation represents this linear relationship?

$y = 6 x + 3$
I'll use $y$ to represent total cost and $x$ to represent cost per hour
$3$ is a fixed cost, rentals cost $6 per hour Two hours cost $6 \cdot 2$dollars, three hours cost $6 \cdot 3$dollars, and so on $x$hours cost $6 \cdot x$dollars ($x$could represent any number of hours) $y = 6 x + 3 \rightarrow$The$3 must be paid regardless of how many hours the skates have been rented, so the $3 must be added on to the $6 x\$