Express the sum using summation notation.
- 
+ 
- ... + (-1)(13 + 1) 
13
A. 
B. 
k
C. 
k
D. 
k
Answer: C
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Fill in the blank with the proper symbol ( <, >, or = ) to make a true statement.
?
11.71 ____ 
11.79
?
A.
11.71 < 
11.79
B.
11.79 = 11.79
C.
11.71 = 11.71
D.
11.71 > 
11.79
E.
11.71 = 
11.79
Solve. Assume the exercise describes a linear relationship.A gas station sells 4820 gallons of regular unleaded gasoline in a day when they charge $1.35 per gallon, whereas they sell 3935 gallons on a day that they charge $1.40 per gallon. Find a linear equation that relates gallons sold to price. Use this equation to predict the number of gallons sold at a price of $1.21 per gallon.
A. 7307 gal B. 7294.7 gal C. 7302.1 gal D. 7298 gal
Rewrite the quadratic function in standard form by completing the square.f(x) = x2 - 8x
A. f(x) = (x - 4)2 - 16 B. f(x) = (x + 8)2 - 8 C. f(x) = (x - 8)2 - 64 D. f(x) = (x + 4)2 - 4
Solve.Find the discount rate when the original price is $158.00 and the amount of the discount is $61.60.
A. 2% B. 1% C. 39% D. 80%