The values of the concentration C of a desired compound in terms of the time t (sec) are given in the following table t 3 9 12 18 24 30 C(t) 4.1 4.3 3.9 3.4 3.1 2.7 Assuming that the guess function is C(t) = c + ae−0.47t + be−0.06t , find the values of a, b and c that best fit this table.

Which is a reasonable estimate of the amount of water in a small, inflatable pool used by children?

Line l passes through points (0,4) and (3,6) what is the slope of a line that is parallel to line l -2/3 -3/2 2/3 3/2

17. a researcher measures three variables, x, y, and z for each individual in a sample of n = 20. the pearson correlations for this sample are rxy = 0.6, rxz = 0.4, and ryz = 0.7. a. find the partial correlation between x and y, holding z constant. b. find the partial correlation between x and z, holding y constant. (hint: simply switch the labels for the variables y and z to correspond with the labels in the equation.) gravetter, frederick j. statistics for the behavioral sciences (p. 526). cengage learning. kindle edition.