HELP PLEASE D: ASAP!

If a student gets 30 problems right to earn a grade of 75 on a test, with every problem worth the same points:

a) How many questions did another student get right if she earned a grade of 90?

b) How many questions were on the test, if a grade of 100 was the highest possible score (Round to the nearest whole number) ?

c) How many points is each question worth? points (Put your answer in decimal form)

What is the 12th term of b(n)=-4-2(n-1)

With this question substitute t=3 and t=5 to determine if the two expressions are equivalent. 4(t + 3) 4t+12 which statements are true? check all that apply. a. the value of both expressions when t =5 is 32. b. the two expressions are not equivalent. c. the value of both expressions when t=3 is 15. d. the value of both expressions when t=5 is 23. e. the two expressions are equivalent. f. the value of both expressions when t=3 is 24.

Solve for x and select the correct answer