Solve the problem.Yvette has up to $4000 to invest and has chosen to put her money into 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 = 4000
x ? 3y
x ? 0
y ? 0
B. x + y ? 4000
3x ? y
x ? 0
y ? 0
C. x + y = 4000
y ? 3x
x ? 0
y ? 0
D. x + y ? 4000
x ? 3y
x ? 0
y ? 0
Answer: D
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