Solve.Use the formula R = log 
+ B to find the intensity R on the Richter scale, given that amplitude a is 330 micrometers, time T between waves is 4.1 seconds, and B is 2.1. Round answer to one decimal place.
A. 4
B. 6.5
C. 6.2
D. 1.9
Answer: A
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A city library system comprised of 4 different libraries dispersed throughout the city allots a certain number of computers for each library to use to keep track of its books and to check books in and out of the library. Given the current computer setup below, use the Huntington-Hill Apportionment Principle to determine which library should receive a new computer recently purchased by the city for library use.
a. Library A
b. Library B
c. Library C
d. Library D
Write the number as indicated.A certain exotic sports car costs three hundred twelve thousand, 
ninety-nine dollars. Write the cost of the car in numeral form.
A. $312,299,000 B. $312,299 C. $31,229 D. $3,202,990
Factor a -1 from the polynomial.4a - b + 7
A. -1(-4a + b + 7) B. -1(-4a + b - 7) C. -1(4a + b - 7) D. -1(-4a - b - 7)
Solve the problem.When a particular circuit containing a resistor, an inductor, and a capacitor in series is connected to a battery, the current i (in amperes) is given by i = 27e-3t(e2.6t - e-2.6t) where t is the time (in seconds). Find the time at which the maximum current occurs. Round to the nearest tenth of a second.
A. 0.5 sec B. 1.5 sec C. 0.6 sec D. 1.4 sec