Identify the like terms 3q, -3p, 3pq, 7q a.3q and -3p b.3 q and 7 q c.3 q and 3 pq d.-3p and 7q

Aboat costs 19200 and decreases in value by 12% per year. how much will it cost in 5 years

Can some one me with these questions

Your friend uses c=50p to find the total cost, c, for the people, p, entering a local amusement park is the cost of admission proportional to the amount of people entering the amusement park? explain.