Solve the problem.The air speed of an airplane is 600 km/hr and its angle of climb is 6.48°. What is its ground speed (to the nearest km/hr)?
A. 596 km/hr
B. 581 km/hr
C. 591 km/hr
D. 586 km/hr
Answer: A
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Each day Larry needs at least 10 units of vitamin A, 12 units of vitamin B, and 20 units of vitamin C. Pill #1 contains 4 units of A and 3 of B. Pill #2 contains 1 unit of A, 2 of B, and 4 of C. Pill #3 contains 
of A, 1 of B, and 5 of C.Pill #1 costs 9 cents, pill #2 costs 15 cents, and pill #3 costs 
Larry wants to minimize cost. What are the constants in the problem?
A. 4, 3, 0 B. 10, 12, 20 C. 4, 1, 10 D. 9, 15, 13
Determine whether the following is the graph of a function.
A. Yes B. No
Solve the problem.Linda invests $25,000 for one year. Part is invested at 5%, another part at 6%, and the rest at 8%. The total income from all 3 investments is $1600. The income from the 5% and 6% investments is the same as the income from the 8% investment. Find the amount invested at each rate.
A. $10,000 at 5%, $5000 at 6%, $10,000 at 8% B. $10,000 at 5%, $10,000 at 6%, $5000 at 8% C. $5000 at 5%, $10,000 at 6%, $10,000 at 8% D. $8000 at 5%, $10,000 at 6%, $7000 at 8%
Write the system of equations in matrix form.  figure 1.png)
 figure 2.png)