Find all numbers for which the rational expression is not defined.
A. y = 3
B. y = 7 and y = -7
C. y = 49
D. y = 7
Answer: B
Mathematics
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Find the product.2y3(3y + 2)(y + -5)
A. -20y4 + -20y3 B. 6y5 + -20y3 C. -26y4 + -20y3 D. 6y5 + -26y4 + -20y3
Mathematics
Provide an appropriate response.A student wanted to estimate 21.5 × 0.0079 by first rounding each number. He solved the problem as follows.21.5 × 0.0079 is approximately equal to 
which is equal to 0.016. So he estimated the answer as 0.016. Do you agree with the answer? If not, explain where the student went wrong and give the correct answer.
What will be an ideal response?
Mathematics
Determine the number of subsets of the set.A set of letters of the word DECIMAL
A. 256 B. 128 C. 14 D. 64
Mathematics
Find all complex solutions for the equation.
+ 
+ 4 = 0
A. 
B. 
C. 
D. 
Mathematics