statistics and Probability

Susan Marciano invested part of her $31,000 bonus in a fund that paid An 11% profit and invested the rest in stock that suffered a 3% loss. Find the amount of each investment if her overall net profit was $3, 130. The amount invested at 11% is $ The amount invested in stock is $ A book contains the following recommended weight for kangaroo: "Give the kangaroo 130 pounds for the N first 5 feet plus 5 pounds for every inch over 5 feet tall." Using this description, what height corresponds to a recommended weight of 155 pounds? Three friends got the prize money worth $68,000. The first friend would get three times the amount of the W third friend's portion. The third friend would get four times the amount of the second friend's portion. Determine the amount that each friend would receive. Determine the constant that should be added to the binomial so that it becomes a perfect square S trinomial. Then, write and factor the trinomial. x2 - 17x Use graphs to find the set. (-4,1) n [0,8] Use graphs to find the set. (-5,7) U [0,9] A truck can be rented from Company A for $140 a day plus $0.20 per mile. Company B charges $ 80 a day plus $0.60 per mile to rent the same truck. How many miles must be driven in a day to make the rental cost for Company A a better deal than Company B's? On two examinations, you have grades of 83 and 92. There is an optional final examination, which counts as one grade. You decide to take the final in order to get a course grade of A, meaning a final average of at least 90. a. What must you get on the final to earn an A in the course? b. By taking the final, if you do poorly, you might risk the B that you have in the course based on the first two exam grades. If your final average is less than 80, you will lose your B in the course. Describe the grades on the final that will cause this to happen