Evaluate the expression for the given replacement values.x - y
for x = -23, y = 16
A. -39
B. 39
C. 7
D. -7
Answer: A
Mathematics
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Determine how many vertices and how many edges the graph has.
A. 6 vertices; 7 edges B. 5 vertices; 7 edges C. 5 vertices; 8 edges D. 5 vertices; 6 edges
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Find the product, if possible. 
A. 
B. 
C. 
D. 
Mathematics
A formula is given along with the values of all but one of the variables in the formula. Find the value of the variable not given. Round to the nearest hundredth where necessary.P = 2L + 2W; L = 2, W = 3
A. 5 B. 10 C. 12 D. 7
Mathematics
Simplify the expression and write the answer without negative exponents.(-7x2y)(-6x3y5)
A. 42x6y5 B. 42x5y6 C. -42x5y5 D. -13x5y5
Mathematics