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## Your credit card has a nominal interest rate of 18%. If the interest is calculated monthly, what is the effective annual rate?

(A)19.0%

(B) 18.5%

(C) 19.6%

(D) 20.1%

A piston inside a cylinder undergoes an isentropic compression with the following values.
$latex p_1= 4.57 \frac{N}{cm^2}$

$latex p_2= 34.07 \frac{N}{cm^2}$

$latex V_1 = 257 cm^3$
If the specific heat ratio (k) is 1.4, What is the compressed volume?

(A) 61.2cm3 (B) 30.5cm3 (C) 90.4cm3 (D) 257cm3

The following data have been collected:

Which of the following statements is true?

(A) The median and the mode are equal. (B) The mean and the median are equal. (C) The mean and the mode are equal. (D) The mean is larger than both the mode and the median.