Question

A group of friends wants to go to the amusement park. They have no more than $310

Answer 1

Answer: $35x+9\leq 310,\ 8$

Step-by-step explanation:

Given

A group of friends has $310 to spend

Parking costs $9 and ticket cost $35 per person

Suppose  there are x friends who go to amusement park

So, the cost of tickets and parking must be less than or equal to $310

$\Rightarrow 35x+9\leq 310\\\text{Subtract 9 from both sides}\\\Rightarrow 35x\leq 301\\\text{Divide both sides by 35}\\\Rightarrow x\leq 8.6$

This indicates that there sholud be maximum 8 persons who can go to amusement park with this much money.