Word Problems Linear Equations

Question

Determine the linear equation that models this problem. The cost of a school banquet is $90 plus $12 for each person attending. What is the cost for 55 people?

 

a.y= 12x-90; $570

b. y= 90x-12; $4938

c. y= 90x +12; $4962

d. y= 12x +90; $750

 

Answer 1

x represents the number of people

y represents the cost

 

y = 90 + 12x

 

d.

 

y = 90 + 12(55)

 

You can calculate the amount.