Use the absolute value to express the distance between the points with coordinates a and b on the number line. Then determine this distance by evaluating the absolute value expression.a = 4 and b = -7
A. 
= -11
B. 
= -3
C. 
= 3
D. 
= 11
Answer: D
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Approximate the area under the curve and above the x-axis using n rectangles. Let the height of each rectangle be given by the value of the function at the right side of the rectangle.y = 2x2 + x + 3 from x = 0 to x = 6; n = 6
A. 200 B. 221 C. 230 D. 211
Solve.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 420 milliamperes when the resistance is 2 ohms, find the current when the resistance is 12 ohms.
A. 70 milliamperes B. 140 milliamperes C. 2520 milliamperes D. 2514 milliamperes
Use the compound interest formulas A = P
nt and 
to solve.Find the accumulated value of an investment of $11,000 at 6% compounded semiannually for 7 years.
A. $16,638.49 B. $15,620.00 C. $13,528.61 D. $16,539.93
Write the fraction in decimal notation.
A. 1.4 B. 1.5 C. 1.6 D. 1.35