Solve the problem.A person with no more than $7000 to invest plans to place the money in two investments, telecommunications and pharmaceuticals. The telecommunications investment is to be no more than 3 times the pharmaceuticals investment. Write a system of inequalities to describe the situation. Let 
to be invested in telecommunications and 
to be invested in pharmaceuticals.
A. x + y = 7000
x ? 3y
x ? 0
y ? 0
B. x + y = 7000
y ? 3x
x ? 0
y ? 0
C. x + y ? 7000
x ? 3y
x ? 0
y ? 0
D. x + y ? 7000
3x ? y
x ? 0
y ? 0
Answer: C
Mathematics
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Solve the problem.The sum of a number and its square is 30. Find the number.
A. -5 or -6 B. 5 or 6 C. -5 or 6 D. 5 or -6
Mathematics
Perform the indicated operation. Simplify, if possible.
+ 
A. 
B. 
C. 
D. 
Mathematics
Write the system of equations associated with the augmented matrix. Do not solve.
A. 8x + 9y + 3z = -2
| 8x | + 3z = 4 |
| 6y + 7z | = 2 |
B. 3x + 3y + 7z = -2
| 9x | + 6z = | 4 |
| 8x + 8y | = | 2 |
C. 3x + 3y + 7z = -2
| 9x | + 6z = 4 |
| 8x | + 8z = 2 |
D. 3x - 3y + 7z = -2
| 9x | + 6z = -4 |
| 8x + 8y | = -2 |
Mathematics
Provide the proper response.Show that a function of the formf(x) = ax4 + bx3 + cx2 + dx + e has no points of inflection whenever 8ac > 3b2.
What will be an ideal response?
Mathematics