Students in Mrs. Ruiz’s class voted for the branch of mathematics they most liked learning in high school. In the table, A represents algebra II, G represents geometry, and T represents trigonometry. Match the event with its experimental probability of the next student to be chosen. Student 1 2 3 4 5 6 7 8 9 10 Boy or Girl Girl Boy Girl Boy Boy Girl Boy Girl Girl Girl Subject A G T A G T T G A G Student 11 12 13 14 15 16 17 18 19 20 Boy or Girl Girl Boy Boy Girl Girl Girl Boy Boy Girl Boy Subject T A G A G T A G T T 1. student who chooses trigonometry 1 4 2. girl who chooses algebra II 1 5 3. boy who chooses geometry 3 20 4. girl who chooses trigonometry 2 5

Mercury poisoning is dangerous overload of mercury within the body. a major source of mercury within the body, a major source of mercury poisoning is consuming fish that contain mercury. certain fish are more prone to having higher levels of mercury than others. the pie chart shows the distribution of four breeds of fish at a hatchery. the hatchery has approximately 6,000 fish. a biologist from the centers for disease control and prevention randomly test 5% of each breed of fish for mercury content. her findings are shown in the following table. based on the biologist's findings, if a single salmon is randomly selected from those that were tested, what is the probability that this particular fish would have a dangerous mercury level? a) 0.001 b) 0.004 c) 0.02 d) 0.08

11. minitab software was used to find the lsrl for a study between x=age and y=days after arthroscopic shoulder surgery until an athlete could return to their sport. use the output to determine the prediction model and correlation between these two variables. predictor coef se coef t p constant -5.054 4.355 -1.16 0.279 age 0.2715 0.1427 1.9 0.094 r-sq = 31.16%

The function a represents the cost of manufacturing product a, in hundreds of dollars, and the function b represents the cost of manufacturing product b, in hundreds of dollars. a(t) = 5t + 2 b(t) = 7t - 2t +4 find the expression that describes the total cost of manufacturing both products, a(t) + b(t). a. 7t^2 - 7t + 2 b. 7t^2 + 3 +6 c. 7t^2 + 7t - 6 d. 7t^2 - 3t + 6