If f(x) = -4x + 3 and g(x) = 3x2 + 2x - 4, find (f+ g)(x). =
O A. (f+ g)(x) = 4x - 1
O B. (f+ g)(x) = -2x-1
OC. (f+g)(x) = 3x2 - 2x-1
O D. (f+g)(x) = 3x2 + 6x + 7
SUE

Over the course of the school year, you keep track of how much snow falls on a given day and whether it was a snow day. your data indicates that of twenty-one days with less than three inches of snow, five were snow days, while of the eight days with more than three inches of snow, six were snow days. if all you know about a day is that it is snowing, what is the probability that it will be a snow day?

Me i’m stuck on all these questions besides the two bottom ones

The weekly amount spent by a company for travel has an approximately normal distribution with mean = $550 and standard deviation = $40. a) what is the probability that the actual weekly expense will exceed $570 for more than 20 weeks during the next year? (note: one year = 52 weeks) b) what is the probability that actual weekly expenses exceed $580 for 10 or more, but 16 or fewer weeks during the next year?