Use the rational zeros theorem to determine the potential rational zeros of the polynomial function. Do not find the zeros.f(x) = 7x4 - x2 + 5
A. ± 
, ± 
, ± 1, ± 5, ± 7
B. ± 
, ± 
, ± 1, ± 5, ± 7
C. ± 
, ± 
, ± 1, ± 5
D. ± 
, ± 
, ± 1, ± 7
Answer: C
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Using determinants, solve for x and y: x + 3y = 10; 3x + 4y = 6
a. 2 4 x = -4Ä y = -4Ä 5 5 b. 2 4 x = -4Ä y = 4Ä 5 5 c. 2 4 x = 4Ä y = 4Ä 5 5 d. 4 4 x = 4Ä y = 4Ä e. 4 3 x = 4Ä y = 4Ä 5 5
Solve the problem.A stockbroker bought 40 shares of stock for $38.79 each. What was the total amount of the purchase?
A. $1551.70 B. $1551.60 C. $1551.50 D. $1551.71
Solve the problem.Using data from 2010-2012, the annual number of cars sold at a certain dealership can be modeled by the formula 
where y is the number of cars, in thousands, sold x years after 2010. According to this formula, in which years will the number of cars sold exceed 37 thousand?
A. Years after 2017 B. Years after 2023 C. Years after 2021 D. Years after 2019
Use the information provided in the first statement to complete the second statement with one of the symbols <, ?, >, or ?.A sweepstakes contest states that a single participant can win at most $1000.A sweepstakes contest states that a single participant can win 
$1000.
A. ? B. < C. ? D. >