Evaluate the expression.
-4
A. - 
B. 
C. 
D. - 
Answer: C
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List the elements in the set .Let U = {q, r, s, t, u, v, w, x, y, z} A = {q, s, u, w, y} B = {q, s, y, z} C = {v, w, x, y, z}. B ? C
A. {w, y, z} B. {y, z} C. {q, s, v, w, x, y, z} D. {y}
The power, in watts, dissipated as heat in a resistor varies jointly with the resistance, in ohms, and the square of the current, in amperes. A 45-ohm resistor carrying a current of 1 ampere dissipates 45 watts. How much power is dissipated in a 40-ohm resistor carrying a current of 2 amperes? ?
A. ?
B. ?
C. ?
D. 
E. ?
Answer the question.In the equation 2x + y = 12, the value of x is 4. What is the corresponding value of y?
A. y = 10 B. y = 6 C. y = 4 D. y = 2
Find the particular solution for the initial value problem. 
= 4xe2x; y(0) = 23
A. y = 4xe2x - 2e2x + 25 B. y = 2xe2x + 23 C. y = 4xe2x - e2x + 24 D. y = 2xe2x - e2x + 24