Solve.-1 - 4x + 11 ? -5x + 4
A. x ? -6
B. x ? -6
C. x < -4
D. x > -4
Answer: A
Mathematics
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Evaluate the integral.
A. 
B. 
C. 
D. 
Mathematics
Use the method of variation of parameters to solve the differential equation.D2y - 16y = e-4x
A. y = C1e-4x + C2e4x + 
xe-4x
B. y = C1e-4x + C2e4x - 
xe4x
C. y = C1e-4x + C2e4x - 
xe-4x
D. y = C1e-4x + C2e4x - 
xe-4x
Mathematics
Solve the problem.The sum of twice a number and 15 less than the number is the same as the difference between -23 and the number. What is the number?
A. -4 B. -2 C. -3 D. -1
Mathematics
Express the interval in set builder notation and graph the interval on a number line.(-?, 5.5]
A. {
x ? 5.5}
B. {
x ? 5.5}
C. {
x < 5.5}
D. {
x > 5.5}
Mathematics