Solve the problem.Tim and Judy mix two kinds of feed for pedigreed dogs. They wish to make 54 pounds of feed worth $0.28 per pound by mixing one kind worth $0.24 per pound with another worth $0.42 per pound. How many pounds of the cheaper kind should they use in the mix?
A. 42 pounds
B. 22 pounds
C. 32 pounds
D. 12 pounds
Answer: A
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Solve the problem.In order to measure the distance across a pond (from A to B), Yuko made some measurements, which are given below the drawing. What is the distance (to the nearest unit)? src="https://sciemce.com/media/4/ppg__ttt0611191524__f1q304g6.jpg" alt="" style="vertical-align: -4.0px;" /> 
A. 125 yd
B. 173 yd
C. 157 yd
D. 138 yd
The graph and equation of a polynomial f(x) are given. Determine the number of real zeros and the number of imaginary zeros.f(x) = x4 - 5x3 + 5x2 - 5x + 4
A. Two real zeros; One imaginary zero B. Four real zeros; no imaginary zeros C. Two real zeros; two imaginary zeros D. Two real zeros; no imaginary zeros
List all possible outcomes for the experiment.A prime number less than 20 is randomly chosen.
A. 2, 3, 5, 7, 11, 13, 17, 19, 20 B. 20 C. 2, 3, 5, 7, 11, 13, 17, 19 D. 2, 3, 5, 7, 11
A boat travels upstream (against the current) between two points on a river 10 mi apart in 2.5 hours. The return trip downstream takes only 45 minutes. What is the boat's speed, and how fast does the current in the river flow?
(a) The speed of the boat is 4.5mi/h and the speed of the current flow is about 8.4 mi/h. (b) The speed of the boat is 8.7 mi/h and the speed of the current flow is about 4.7 mi/h. (c) The speed of the boat is 6.7 mi/h and the speed of the current flow is about 8.7 mi/h. (d) The speed of the boat is 5 mi/h and the speed of the current flow is about 4 mi/h. (e) The speed of the boat is 13.7 mi/h and the speed of the current flow is about 6.7 mi/h.