Choose the best score on a quiz

a) 150 points out of 250

b) 24 points out of 42

c) 75 points out of 135

d) 75 points out of 150

What is the simplified form of (3.25x10^3)(7.8x10^6) written in scientific notation?

If olu is twice as old as funmi if the sum of their ages is 60 how old is olu

When solving this problem: 3025/5.5 = a/90.75 you get 49912.5 which would be the length of one of the sides of a square when the area is only 90.75 inches. is that answer correct, why, and how is it possible?