Add or subtract and simplify.
- 
A. 
B. 
C. 
D. 
Answer: C
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Write the sum without sigma notation and evaluate it.
A. -(1 - 3)2 -2(2 - 3)2 -3(3 - 3)2 = -6 B. (1 - 3)2 - (3 - 3)2 = -4 C. -(1 - 3)2 + (2 - 3)2 - (3 - 3)2 = 3 D. -(1 - 3)2 + (2 - 3)2 - (3 - 3)2 = -3
Perform the division.(x4 - 81) ÷ (x + 3)
A. x3 - 3x2 + 9x - 27 B. x3 + 3x2 + 9x + 27 C. x2 + 3x + 9 D. x3 + 3x2 - 9x + 27
Solve the variation problem.If the voltage, V, in an electric circuit is held constant, the current, I, is inversely proportional to the resistance, R. If the current is 150 milliamperes when the resistance is 2 ohms, find the current when the resistance is 10 ohms.
A. 750 milliamperes B. 30 milliamperes C. 745 milliamperes D. 60 milliamperes
Provide an appropriate response.A computer can do one calculation in 1.4 × 10-7 seconds. Write this number without exponents.
A. 14,000,000 B. 0.000000014 C. 0.000014 D. 0.00000014