The percent P of men 65 years of age or older in the labor force can be modeled by 
, where x is the number of years past 1890 (Source: U.S. Bureau of the Census). Plot this function using a graphing utility. What range of x-values and y-values do you need to use to view this graph for the years 1890 to 2010?
?
A. x-min = 0, x-max = 120y-min = 0, y-max = 60
B. x-min = -120, x-max = 0y-min = 0, y-max = 70
C. x-min = -120 , x-max = 120y-min = 0, y-max = 50
D. x-min = 0, x-max = 90y-min = 0, y-max = 50
E. x-min = 0, x-max = 120y-min = 0, y-max = 70
Answer: E
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Use the compound-interest formula to find the account balance with the given conditions: P = principal, r = interest rate, t = time, in years.P = $900, t = 9, r = 5.1% compounded daily
A. $1424.20 B. $142.42 C. $88,361.45 D. $1422.86
Solve the equation for the specified variable.P = 
for r
A. r = 
B. r = 
C. r = 
D. r = P - tA
Determine the appropriate rotation formulas to use so that the new equation contains no xy-term.x2 + 2xy + y2 - 8x + 8y = 0
A. x = 
(x' - y') and y = 
(x' + y')
B. x = -y' and y = x'
C. x = 
x' - 
y' and y = 
x' + 
y'
D. x = 
x' - 
y' and y = 
x' + 
y'
Determine the most appropriate metric unit to go in the blank. Choose from km, m, cm, mm, L, mL, kg, g, and mg.Helen and Juan went hiking. Between the two of them they brought 8 
of water.
A. g B. mL C. m D. L E. mg