Use a graphing calculator to plot the data and find the quadratic function of best fit.The following table shows the median number of hours of leisure time that Americans had each week in various years.
Use x = 0 to represent the year 1973. Using a graphing utility, determine the quadratic regression equation for the data given. What year corresponds to the time when Americans had the least time to spend on leisure?
What will be an ideal response?
M(x) = 0.04x2 - 1.21x + 26.03; 1988
Mathematics
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Solve the differential equation subject to the initial conditions.y' + y = 2ex; y = 20 when x = 0
A. y = 4e2 + 20e-x B. y = 2ex + 17e-x C. y = 20ex D. y = ex + 19e-x
Mathematics
Round the decimal to the given place value.3.817, nearest tenth
A. 3.817 B. 3.7 C. 3.8 D. 3.9
Mathematics
Round the decimal to the given place value.27.9843, nearest hundredth
A. 27.9843 B. 27.88 C. 28.08 D. 27.98
Mathematics
Solve the system of linear equations by the method of elimination. Find (x, y) and check your solution algebraically.
a. (4, 1)
b. (4, –4)
?c. (–4, –1)
?d. (4, –1)
Mathematics