Solve the equation.
+ 3 = 5
A. {56}
B. ?
C. {12}
D. {-4}
Answer: D
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Find the mean for the list of numbers.Inches of snowfall per month: 4.2, 4.5, 2.5, 4.5, 2.3Round answer to the nearest tenth if necessary.
A. 4.2 in. B. 3 in. C. 4.5 in. D. 3.6 in.
Provide an appropriate response.Two supermarkets, R and C, want to run a promotional on the same item. A market research firm provided the payoff matrix below, where each entry indicates the percentage of customers going to market R at the indicated prices of that item. Find the saddle value, and the optimum strategy for each store. Store C 
Store R 
A. 60%; R sells the item at $1.85, C sells the item at $1.55. B. 50%; R sells the item at $1.85, C sells the item at $1.55. C. 50%; R sells the item at $1.55, C sells the item at $1.85. D. 60%; R sells the item at $1.55, C sells the item at $1.85.
Multiply and simplify.
? 
A. 
B. 
C. 
D. 6
Solve the problem.Approximate the area under the graph of f(x) = 2x2 + x + 3 from 0 to 6 by partitioning the interval into 6 subintervals of equal length and choosing t to be the left endpoint.
A. 180 B. 221 C. 143 D. 179