Solve.A collection of dimes is arranged in a triangular array with 18 coins in the base row, 17 in the next, 16 in the next, and so forth with 1 dime in the last row. Find the value of the collection.
A. $8.55
B. $1.71
C. $34.20
D. $17.10
Answer: D
Mathematics
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A computer store has fixed costs of $7,250 per month and a unit cost of $700 for every computer it sells. If the store can sell all the computers it can get for $950 each, how many must be sold for the store to break even? (The break-even point occurs when costs equal income.) ?
A. 31 computers B. 43 computers C. 22 computers D. 29 computers E. 37 computers
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- cos 
A. 
B. 
C. 0
D. 1
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, 
A. 1344 B. 224 C. 672 D. 336
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