Curing times in days (x) and compressive strengths in mpa (y) were recorded for several concrete specimens. the means and standard deviations of the x and y values were x⎯⎯ = 5, sx = 2, y⎯⎯ = 1350, sy = 100. the correlation between curing time and compressive strength was computed to be r = 0.7. find the equation of the least-squares line to predict compressive strength from curing time. round the answers to two decimal places.

8

step-by-step explanation:

to find the amount of gift bags to use all the supplies, find the gcf or greatest common factor. this is the largest number which multiplies evenly into each term.

48 has factors: 1, 2, 3, 4, 6, 8, 12. 16, 24, 48

80 has factors: 1, 2, 4, 5, 8, 10, 16, 20, 40, 80

64 has factors: 1, 2, 4, 8, 8, 16, 32, 64

the highest number factor they all share in common is 8. this means there will be 8 bags with 6 pencils, 10 markers, and 8 stickers in each bag.

the correct answer is b. negative exponential growth.

step-by-step explanation:

you can tell it's an exponential function because it decreases rapidly then levels out and never touches the x-axis.

it is negative because the y-axis decreases as the x-axis increases.

therefore it is a negative exponential growth graph.

hope i !