Simplify the expression by combining like radicals where possible.2
+ 2 - 9
A. -5
B. 2 + 11
C. 2 + 7
D. 2 - 7
Answer: D
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Find the expected value of the random variable.The random variable X is the number of complaints per day received by a business bureau.. Find the expected number of complaints per day. 
A. 2.85 B. 2.98 C. 3.01 D. 2.73
Solve.Find which is the better buy (lower cost per ounce) by finding each unit price rounded to three decimal places if necessary. Shampoo: $1.13 for 18.0 ounces $1.00 for 11.5 ounces
A. $1.00 for 11.5 ounces B. $1.13 for 18.0 ounces C. Both cost the same per ounce.
Determine which of the sets of vectors is linearly independent.A: The set 
in C[0, 1]B: The set 
in C[0, 1]C: The set 
in C[0, 1]
A. B only B. A and C C. A and B D. A only E. C only
Find the derivative of f at the given point.f(x) = -4x2 + 7x at x = 5
A. -33 B. -13 C. 3 D. 33