Decide whether the pair of lines is parallel, perpendicular, or neither.12x + 4y = 1615x + 5y = 21
A. parallel
B. perpendicular
C. neither
Answer: A
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Use the square root property to solve the given equation.x2 - 36 = 0
A. {20.5} B. {6} C. {5, -5} D. {6, -6}
Solve the equation for the specified variable.P = 
for r
A. r = 
B. r = 
C. r = 
D. r = P - tA
Write the decimal point in the correct location. 495.89 × 10 = 495890
A. 4958.90 B. 495,890. C. 495.890 D. 49,589.0
Solve the problem.The function f(t) = -0.14t2 + 0.52t + 31.9 models the U.S. population in millions, ages 65 and older, where t represents years after 1990. The function g(t) = 0.5t2 + 12.49t + 106.8 models the total yearly cost of Medicare in billions of dollars, where t represents years after 1990. What does the function 
represent? Find 
(10).
A. Cost per person in thousands of dollars. $12.19 thousand B. Cost per person in thousands of dollars. $0.18 thousand C. Cost per person in thousands of dollars. $9.11 thousand D. Cost per person in thousands of dollars. $0.08 thousand