Answer:
B. $795
Step-by-step explanation:
A catering company uses a linear function to determine the total cost of parties. The following table shows the costs for dinner parties with varied numbers of guests. What is the cost to cater a dinner party with 90 guests
Guests Total Cost
30 $315
60 $555
90 ?
A. $720 B. $795 C. $870 D. $945
To cater for 30 guests, they spent $315
To cater for 60 guests, they spent $555
Difference in the number of guests = 60 - 30 = 30 guests
Difference in the cost of catering for guest = $555 - $315
= $240
This means $240 is spent to cater for an additional 30 guests
To cater for 90 guests at the dinner party,
Add $240 to the cost of catering for 60 guests
Cost of catering for 60 guests = $555
Cost of catering for 90 guests = $555 + $240
= $795
Therefore the cost of catering for 90 guests = $795
