Suppose there are 10 multiple choice questions in an science class quiz. each question has four possible answers, and only one of them is correct. what is the probability of having two correct answers if a student attempts to answer every question at random

It took alice 5 5/6 hours to drive to her grandparents' house for . on the way home, she ran into traffic and it took her 7 3/8 hours. how much longer did the return trip take? write your answer as a proper fraction or mixed number in simplest form. the trip home took __hours longer. ?

For f(x) = 3x+1 and g(x) = x2 - 6, find (g/f)(x)

Awindow washer cleans 42 windows in 2 hours. at this rate, how many windows did he clean in 180 minutes.