Determine what signs on values of x and y would make the statement true. Assume that x and y are not 0.
< 0
A. y must be negative.
B. x must be negative.
C. x and y have different signs.
D. x and y must be negative.
Answer: A
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Round the numbers so that there is only one non-zero digit, and estimate the answer. Then perform the indicated operation to find the exact answer.13.85 + 31.9 + 9.2
A. estimate: 49; exact: 54.95 B. estimate: 49; exact: 44.95 C. estimate: 50; exact: 55.95 D. estimate: 49; exact: 53.95
State the domain and range of the given function.f(x) = x2 + 4
A. Domain: (-?, ?) Range: (-?, 4] B. Domain: (-?, ?) Range: (-?, ?) C. Domain: [4, ?) Range: (-?, ?) D. Domain: (-?, ?) Range: [4, ?)
Solve. Remember to insert units when writing your answer.One box of cake mix weighs 2.365 kilograms, but 81 grams of this weight is the packaging. Find the actual weight (excluding packaging) of the cake mix in 3 boxes.
A. 7.095 kg B. 6.852 kg C. 4.665 kg D. 2.284 kg
Graph the feasible region for the system of inequalities.2x + y ? 4 x - 1 ? 0
A. 
B. 
C. 
D. 