Answer: 
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

This indicates that there sholud be maximum 8 persons who can go to amusement park with this much money.
Answer:
d
Step-by-step explanation:
the zeros are 1 and -4 and the graph points upward because a is positive
Answer:
20 > x > 10
Step-by-step explanation:
30 > x + 10 > 20
(take ten on each side to get x on its own and to get your final answer which is...)
20 > x + 10 > 10