Simplify the expression. If any variables exist, assume that they are positive.11
- 4x
A. 15
B. 7x
C. 11
- 4x
D. 7x
Answer: D
Mathematics
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Solve the problem.The kinetic energy K of a mass is proportional to the square of its velocity v. If K = 7200 joules when 
what is K when v = 8 m/sec?
A. 3520 joules B. 3200 joules C. 3840 joules D. 2560 joules
Mathematics
Determine whether the given equation is the general solution or a particular solution of the given differential equation.
- 
= 2y, y = ce-x - 8e2x
A. Particular solution B. General solution
Mathematics
Use the information in the table to solve the problem. Write your answer as a fraction in lowest terms.The table below shows the amounts of pollutants (in parts per million) in a sample of rainwater.
Find the ratio of pollutant E to pollutant A.
A. 
B. 
C. 
D. 
Mathematics
Graph the function.f(x) = 
A. 
B. 
C. 
D. 
Mathematics