Solve the system by substitution.0.3x + 0.9y = 1.8 x - 0.5y = -4.5
A. {(-3, 3)}
B. {(3, -3)}
C. ?
D. {(-0.3, 0.3)}
Answer: A
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Use a graphing calculator to solve the given equations to the nearest 0.01.x3 + 2x2 - 5x - 10 = 0
A. 2, 2.14, -2.14 B. -2, 2.24, -2.24 C. 2, 2.24, -2.24 D. -2, 2.34, -2.34
Provide an appropriate response.The velocity of an object is given by V(t) = 
, where t is the time in seconds and V(t) is the speed in feet/sec. Use n = 6 and the trapezoidal rule to approximate 
the distance moved over the interval 
.
Fill in the blank(s) with the appropriate word(s).
Solve.While walking, Joe's heart beats 5,010 times in 60 minutes. What is the rate in beats per minute?
A. 0.012 beats/min B. 86.8 beats/min C. 77.7 beats/min D. 83.5 beats/min
Find the median for the data given.Number of customers at concession stand: 35, 16, 5, 5, 27, 15, 28, 32, 40, 36
A. 24 customers B. 27 customers C. 28 customers D. 27.5 customers