Marissa got a 75% on her quiz. she had 30 questions correct. how many questions were on the quiz?

Ineed if you could explain and give me the answer you! this needs done

1. what expression would be the same as 6x+x+0 2. find the prime factorization of 60 3. write the expression for 6 + x in words.

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.