Question

The formula c=5p+10 relates c, the total cost in dollars of hosting a birthday party at a movie theater to p, the number of people attending. A. Solve the formula for p B. If Brook's parents are willing to spend $400 for her party, how many people can attend?

Answer 1

Answer:78 people can attend the party.

Explanation:

Given: The formula
`c=5p+10` relates c, the total cost in dollars of hosting a birthday party at a movie theater to p, the number of people attending.

Put c= $400

Then,
`400=5p+10`

`\Rightarrow\ 400-10=5p\\\\\Rightarrow\ 390=5p\\\\\Rightarrow\ p=(390)/(5)\\\\\Rightarrow\ p= 78`

i.e. 78 people can attend the party.