Question

Jeffrey is excited to graduate from high

school. His parents suggest celebrating
with a graduation dinner, so Jeffrey finds
a restaurant that will rent a private room
for $25. The restaurant will also charge
$7.50 to feed each quest.
Write an equation showing how the cost
of Jeffrey's graduation dinner, y, depends
on the number of guests, X.
Do not include dollar signs in the
equation.

Answer 1

y=7.5x+25

Explanation:

7.5x is the cost per person (average rate of change/slope)

25 is the y-intercept (the amout you start out with

and y is the total cost.