First, use front-end rounding to round each number and estimate the answer. Then, find the exact answer.Chi bought 2 items at Lucky Pete's market. She bought a pound of butter for $0.71 and a gallon of milk for $2.56. What was the total amount that she paid for both of these items?
A. Estimate: $ 3; exact: $3.27
B. Estimate: $ 5; exact: $1.71
C. Estimate: $ 4; exact: $3.27
D. Estimate: $ 4; exact: $1.71
Answer: C
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Solve the problem.A farmer has a 1.9 square mile plot of land that he is willing to sell to a developer. The developer will buy by the square meter. How many square meters of land should the farmer say he will sell?
A. 49,400 m2 B. 730,768.5 m2 C. 4,940,000 m2 D. 73.08 m2
Use the discriminant to determine whether the equation has two rational solutions, one rational solution, two irrational solutions, or two nonreal complex solutions. Do not actually solve.1 + 7z2 = 2z
A. Two irrational solutions B. One rational solution C. Two nonreal complex solutions D. Two rational solutions
Find an equation of variation for the given situation.m varies directly as p, and m = 72 when p = 9.
A. m = 
p
B. m = 63p
C. m = 81p
D. m = 8p
Determine the size of the sample space for the experiment described.A box contains 10 red cards numbered 1 through 10. State the number of elements in the sample space of picking one card from the box.
A. n(S) = 100 B. n(S) = 10 C. n(S) = 1 D. None of these