Find an equation for the line tangent to the curve at the point defined by the given value of t.x = 4 sin t, y = 4 cos t, t = 
A. y = - x + 4
B. y = 4x + 4
C. y = x - 4
D. y = 4
x + 1
Answer: C
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Solve the problem.On a buying trip in Los Angeles, Rosaria Perez ordered 120 pieces of jewelry: a number of bracelets at $12 each and a number of necklaces at $14 each. She wrote a check for $1480 to pay for the order. How many bracelets and how many necklaces did Rosaria purchase?
A. 95 bracelets and 25 necklaces B. 105 bracelets and 15 necklaces C. 110 bracelets and 10 necklaces D. 100 bracelets and 20 necklaces
Solve.On a map, 1 in. represents 120 miles. How much does 
in. represent?
A. 72 mi B. 62 mi C. 200 mi D. 82 mi
Solve the problem.How many 7-symbol codes can be formed using 3 different symbols? Repeated symbols are allowed.
A. 840 B. 210 C. 2187 D. 35
Solve.8x(x - 2) - 20 = 5x(x - 4)
A. - 
, 2
B. -10, 2
C. - 
, -2
D. 
, -2