Solve the problem.A collection of dimes is arranged in a triangular array, with 15 coins in the base row, 14 in the next, 13 in the next, and so forth. Find the value of the collection.
A. $1.20
B. $12.00
C. $24.00
D. $6.00
Answer: B
Mathematics
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Solve the equation.4x = -24
A. {4} B. {6} C. {-4} D. {-6}
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Graph the parametric equations.x = 4 sin t, y = 4 cos t, for t in [0, 2?]
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.A surveyor measured the length of a piece of land at 100-ft intervals (x), as shown in the table. Use the trapezoidal rule to estimate the area of the piece of land in square feet.
A. 24,500 ft2 B. 24,000 ft2 C. 25,000 ft2 D. 29,500 ft2
Mathematics
Find a formula for the inverse of the function described below.A size-46 dress in Country C is size 15 in Country D. A function that converts dress sizes in Country C to those in Country D is 
A. f-1(x) = 2x + 8 B. f-1(x) = 2(x + 8) C. f-1(x) = x + 8 D. f-1(x) = 2(x - 8)
Mathematics