It costs $315 to book a DJ for 3 hours. It costs $525 to book the same DJ for 5 hours. How do you write an equation that represents the cost #y# in dollars of booking a DJ for #x# hours?

1 Answer
Kushagra
Jun 18, 2018

For 3 hours, it takes #$315#, that is #($315)/3"per hour"=$105"/"hr#
For 5 hours, it takes #$525#, that is #($525)/5"per hour"=$105"/" hr#
It is then a linear equation

Per every hour, the DJ takes #$105#

#x" hours "=105x" dollars "#

Here, #105x=y#

If you book it for #1# hour

#1" hour " = 105 xx 1 "dollars"#

See?

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