I need help with 18-27

Item 1 solve for s. s+24=90 −114 −66 66 114

In which direction does the left side of the graph of this function point? f(x) = 3x3 - x2 + 4x - 2

Atest consists of 10 multiple choice questions, each with 5 possible answers, one of which is correct. to pass the test a student must get 60% or better on the test. if a student randomly guesses, what is the probability that the student will pass the test?