When laboratory rats are exposed to asbestos fibers, some of them develop lung t
ID: 3008412 • Letter: W
Question
When laboratory rats are exposed to asbestos fibers, some of them develop lung tumors. The following table lists the results of several such experiments by different scientists. Find the regression tine for the data. Use your model to estimate the percent that develop lung tumors if the asbestos level is 22 fibers/mL. Biff and Ted leave Raleigh at 2:30 PM and drive at a constant speed west along highway 1-40. They pass Asheville, 275 miles from Raleigh, at 6:48 PM. Find the slope of the regression line. Find the value of y when x = 6 given that y = 12(3.8)^x. Describe the difference between the graph of y = (1/4)^x and y = 4^x. If $8,000 is borrowed at a rate of 10.5% interest per year, find the amount of the investment compounded quarterly, at the end of 11 years. Express the following equation in exponential form: ln x = 17. Evaluate the expression log_5 625. Use the Law of Logarithms to rewrite the expression in a form with no products, quotients, or powers. log_3 (x^2 y^3 squareroot z)_2Explanation / Answer
21) what type of data regression is to be used in the problem, please specify i have solved remaining all the questions
22) Time taken = 4 * 60 + 18 = 258 min
Distance travelled = 275 miles
Hence the speed will be 275/258 miles/min = 1.0658 miles/min = 63.953 miles/hour
23)
substituting value of x=6 in the given equation we get
y = 12(3.8)^6 = 36131.2366
24)
The graph of (1/4)^x decays in time as x increases from 0 to infinity whereas 4^x increases as x increases from 0 to infinity
Similarly for negative values of x, the curve (1/4)*x increases but 4^x decreases
25)
Amount = P(1+r/n)^(nt)
=> 8000(1+0.105/4)^(44)
=> $25016.66
26)
lnx = 17
x = e^(17)
27)
log 625 to the base 5
=> 4
28)
2 logx + 3 logy + 1/2 * logz
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