Solve the problem.Find the minimum possible value of f = 2x + 4y subject to the following constraints: 
A. 0
B. 10
C. 30
D. 20
Answer: D
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Sketch the graph of the equation in the rectangular coordinate system in three dimensions.16x2 + y2 + z2 = 16
What will be an ideal response?
Solve.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. At 5%: $10,000; at 6%: $5000; at 8%: $10,000 B. At 5%: $10,000; at 6%: $10,000; at 8%: $5000 C. At 5%: $8000; at 6%: $10,000; at 8%: $7000 D. At 5%: $5000; at 6%: $10,000; at 8%: $10,000
Perform the indicated operations and simplify the result. Leave the answer in factored form.
- 
A. 
B. 
C. 
D. 
A force of 
newtons stretches a spring 
meter (see figure).
How far will a force of 60 newtons stretch the spring? What force is required to stretch the spring 0.1 meter?
?
A. 
B. 
C. 
D. 
E. 