Find the product.(x - 2.2)(2x + 0.2)
A. 2x2 + 4.2x + 0.44
B. 3x2 + 4.2x - 2
C. 2x2 - 4.2x - 0.44
D. 3x2 - 4.2x + 2
Answer: C
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Completely factor the polynomial or state that the polynomial is prime.15x2 - 65x - 50
A. 5(3x + 2)(x - 5) B. prime C. (15x + 10)(x - 5) D. 5(3x - 2)(x + 5)
Solve the problem.A developer wants to enclose a rectangular grassy lot that borders a city street for parking. If the developer has 264 feet of fencing and does not fence the side along the street, what is the largest area that can be enclosed?
A. 13,068 ft2 B. 8712 ft2 C. 17,424 ft2 D. 4356 ft2
Solve the equation.2x + 8 = x + 16
A. 4
B. 8
C. -8
D. 
Solve the problem.Patients at a medical clinic have a wait time modeled by 
for 
where the random variable x is in minutes. Find the mean, the variance, and the standard deviation.
A. ? = 6, ?2 = 36, ? ? 6
B. ? = 6, ?2 = 72, ? ? 6
C. ? = 12, ?2 = 36, ? ? 6
D. ? = 12, ?2 = 72, ? ? 6