Find the nth term of the geometric sequence.-4, -12, -36, -108, -324
A. an = -4 ? 3n-1
B. an = -4 ? 3n
C. an = -4 ? 3n
D. an = a1 + 3n
Answer: A
Mathematics
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Determine if the given function y = f(x) is a solution of the accompanying differential equation.y = 
dtx2y' + xy = 
e2x
A. Yes B. No
Mathematics
Solve the equation.
= p + 2
A. {6}
B. {-4}
C. 
D. {4}
Mathematics
Identify the type of sampling described by the proposal.A writer for an art magazine randomly selects and interviews fifty male and fifty female artists.
A. cluster sample B. stratified sample C. simple random sample D. systematic sample E. convenience sample
Mathematics
The letters x and y represent rectangular coordinates. Write the equation using polar coordinates (r, ?).2x + 3y = 6
A. 2 sin ? + 3 cos ? = 6r B. r(2 cos ? + 3 sin ?) = 6 C. 2 cos ? + 3 sin ? = 6r D. r(2 sin ? + 3 cos ?) = 6
Mathematics