Nicholas bought three business related books. his total bill was $150. if one book cost him 50% more than the other two books combined what was the price of this more expensive book?

Does the problem involve permutations or? combinations? do not solve. the matching section of an exam has 4 questions and 7 possible answers. in how many different ways can a student answer the 4 ? questions, if none of the answer choices can be? repeated?

What are the soultion(s) to the quadratic equation 40- x^2=0

What is the binomial expansion of (2x-3)^5