The cost of a school banquet is $70 plus $15 per person attending. Determine the linear equation that models this problem. What is the cost for 44 people?

Question

2901 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2015-11-01T12:38:41

Let's make this an #x-y# problem where #x#=persons and #y#=cost

When #x=0->y=70# (this is called the #y#-intercept.

For every #x+1->y+15# so #(Deltay)/(Deltax)=15# (=the slope)

So the equation will be #y=15x+70#

And for #44# or any other number of people you just substitute the number for #x#.