Determine wether each ordered pair is a solution of the given equation. 17. y=3x-5; (0,5), (-1,-8) 18. y=-2x+7; (1,,3) 19. -6x+5y=-6; (1,0), (2,6/5) 20. 5x-3y=9; (0,3), (12/5,-1) 21. y=2x^2; (1,2), (3,18) 22. y=2|x|; (-1,2), (0,2) 23. y=^3; (2,8), (3,9) 24. y=x^4; (-1,1), (2,16) 25. y=√x+2; (1,3), (4,4) 26. y=3√x-4; (1,-3), (8,6)

The data shown in the table below represents the weight, in pounds, of a little girl, recorded each year on her birthday. age (in years) weight (in pounds) 2 32 6 47 7 51 4 40 5 43 3 38 8 60 1 23 part a: create a scatter plot to represent the data shown above. sketch the line of best fit. label at least three specific points on the graph that the line passes through. also include the correct labels on the x-axis and y-axis. part b: algebraically write the equation of the best fit line in slope-intercept form. include all of your calculations in your final answer. part c: use the equation for the line of best fit to approximate the weight of the little girl at an age of 14 years old.

The rate of decay of a radioactive substance depends upon the amount present initially. the mass y (mg) of the radioactive substance cobalt-60 present in a sample at time t (years) is represented by the exponential equation y=50e −0.1315 t . answer the following questions in complete sentences. 1. how does the exponential equation above compare to the equation for simple interest that is compounded continuously? explain the similarities. 2. what is the initial amount of cobalt-60 in the sample? 2. how much cobalt-60 is left after 8.4 years? show your work. 3. what would be the y-intercept of the graph? what does it represent? 4. after how many years will the amount of cobalt-60 left be 6.25 mg? explain what happens to the cobalt-60 after 50 years? 5. discuss some “real-world” examples and uses of cobalt-60

Describe how making an ‘and’ compound sentence effects your solution set