Tabitha is renting a ballroom for an upcoming dinner reception. The rental fee for the ballroom includes a base price plus the cost of dinner per person. The table below shows the cost of the ballroom rental in relation to the number of people attending the dinner reception.

No. of Attendees 20 40 60
Total Rental Cost $425 $565 $705

What is the base price for the ballroom rental?
A. $140
B. $285
C. $57
D. $7

Question

Tabitha is renting a ballroom for an upcoming dinner reception. The rental fee for the ballroom includes a base price plus the cost of dinner per person. The table below shows the cost of the ballroom rental in relation to the number of people attending the dinner reception.

No. of Attendees	20	40	60
Total Rental Cost	$425	$565	$705

What is the base price for the ballroom rental?
	A. 	 $140
	B. 	 $285
	C. 	 $57
	D. 	 $7

mertsj · Answer

1.  Choose two of the ordered pairs.  
2.  Find the slope using the chosen ordered pairs
3.  Plug the slope and one of the ordered pairs into "point-slope" form
4.  Put the equation into slope-intercept form
5.  The y intercept is the base price