Provide an appropriate response. On a wager, A gambler bets $7 and wins 3 times the amount of the initial bet. Express as a signed number the amount of money he won.
A. -$21
B. -$4
C. +$21
D. +$4
Answer: C
Mathematics
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Rewrite the quadratic function in standard form by completing the square.f(x) = x2 + 20x
A. f(x) = (x - 20)2 + 20 B. f(x) = (x + 10)2 - 100 C. f(x) = (x - 10)2 + 10 D. f(x) = (x + 20)2 - 400
Mathematics
Find the indicated sum. Use the formula for the sum of the first n terms of a geometric sequence.
A. 
B. 
C. 
D. 
Mathematics
Assume that x, y, and c are positive numbers. Use the properties of logarithms to write the expression in 
in terms of the logarithms of x and y.
a. 
b. 
c. 
d. 
Mathematics
Write the fraction 
in decimal form. (Use bar notation for repeating digits.)
A. 
B. 
C. 
D. 
E. 
Mathematics