The graph of a function f is given. Use the graph to answer the question.Is f(20) positive or negative?
A. positive
B. negative
Answer: B
Mathematics
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Find the indicated vector.Let u = 
. Find -6u.
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.Suppose that f and g are continuous and that 
and 
A. 10 B. -6 C. -10 D. 6
Mathematics
Determine all possible rational solutions of the polynomial equation.f(x) = 2x3 - 5x2 + 7x - 17
A. ±1, ±2, ±17, ± 
B. ±1, ± 
, ±2, ± 
C. ±1, ±17, ± 
, ± 
D. ±1, ±2, ±17
Mathematics
Find the exact answer.At SuperStop, gasoline costs 
per gallon when you pay with a credit card and 
gallon less when you pay with cash. How much do you save by filling up a 
tank if you are paying cash?
A. $54.30 B. $1.20 C. $12.00 D. $53.10
Mathematics