Factor completely. State that the polynomial is prime if it cannot be factored.x2 - 3x - 40
A. (x - 5)(x + 8)
B. (x + 5)(x - 8)
C. (x - 5)(x + 1)
D. prime
Answer: B
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Solve the problem.A merchant has coffee worth $30 a pound that she wishes to mix with 20 pounds of coffee worth 
a pound to get a mixture that can be sold for 
a pound. How many pounds of the 
coffee should be used?
A. 15 pounds B. 5 pounds C. 30 pounds D. 10 pounds
Perform the indicated operation
Find the length of the third side of the right triangle. Assume that c represents the length of the hypotenuse. Give an exact answer and, if appropriate, an approximation to three decimal places.a = 1, c = 11
A. b = 10
B. b = 
; b ? 3.162
C. b = 
; b ? 10.954
D. b = 
; b ? 11.045
Provide an appropriate response.A prime number is any number larger than 1 that is divisible only by itself and 1.
A. True B. False