y = k x
30 = k * 4
k = 30/4 = 15/2 = 7.5
so
y = 7.5 x
the slope is $ 7.50 per eater
10 * 7.5 = 75 usually
The cost y (in dollars) to provide food for guests at a dinner party is proportional to the number x of guests attending the party. It costs $30 to provide food for 4 guests.
a. Write an equation that represents the situation.
b. Interpret the slope.
c. How much does it cost to provide foos for 10 guests?The cost y (in dollars) to provide food for guests at a dinner party is proportional to the number x of guests attending the party. It costs $30 to provide food for 4 guests.
1 answer
1 answer