Roofing shingles are sold by the "square". A square can cover an area of roof that is 13 ft long and 13 ft wide. A home improvement store sells shingles by the square or by the bundle. The area of a roof is 
Find the minimum number of squares needed to shingle this roof. Round up to the nearest square.
A. 20
B. 19
C. 21
D. 18
Answer: B
Mathematics
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Convert as indicated.9200 L to hectoliters
A. 920,000 hL B. 92 hL C. 92,000 hL D. 920 hL
Mathematics
Graph the equation and give the coordinates of the vertex.y = x2 - 2x + 8 
A. (1, -9)
B. (-1, 7)
C. (-1, 9)
D. (1, 7)
Mathematics
Determine the domain and the range of the function.f(x) = x2 + 2x - 8
A. domain: all real numbers range: {y|y ? 9} B. domain: range: {x|x ? 1} range: {y|y ? 9} C. domain: range: {x|x ? 1} range: {y|y ? -9} D. domain: all real numbers range: {y|y ? -9}
Mathematics
Find the probability.A card is drawn from a well-shuffled deck of 52 cards. What is the probability of drawing an ace or a 7?
A. 
B. 
C. 
D. 8
Mathematics