Use your graphing calculator to convert to rectangular coordinates. Round all values to four significant digits.
?
What will be an ideal response?
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Find the equation of the line of best fit from the data in the table. Round the slope and the y-intercept to the nearest hundredth.
A. y = -6.2x + 140.4 B. y = -6.8x + 150.7 C. y = 6.8x - 150.7 D. y = 6.2x - 140.4
Graph the inequality.y ? - 5x
A. 
B. 
C. 
D. 
Solve the problem.The function f(t) = -0.12t2 + 0.53t + 30.8 models the U.S. population in millions, ages 65 and older, where t represents years after 1990. The function g(t) = 0.55t2 + 11.89t + 105.3 models the total yearly cost of Medicare in billions of dollars, where t represents years after 1990. What does the function 
represent? Find 
(15).
A. Cost per person in thousands of dollars. $0.16 thousand B. Cost per person in thousands of dollars. $0.03 thousand C. Cost per person in thousands of dollars. $34.67 thousand D. Cost per person in thousands of dollars. $8.64 thousand
Solve.x4 - 12x2 + 27 = 0
A. ±3, ±3
B. 3, 
C. ±3, ±
D. ±3, ±2