Write the phrase as a variable expression. Use x for the unknown number.The product of -4 and the sum of a number and 21
A. -84x
B. -4 + 21x
C. -4x + 21
D. -4(x + 21)
Answer: D
Mathematics
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What will be an ideal response?
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Find the distance d(A, B) between the points A and B.A(-6, -1); B(4, -5)
A. 84
B. 14
C. 2
D. 84
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Graph the exponential function.y = 
x + 1 
A. 
B. 
C. 
D. 
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Multiply and simplify.
? 
A. 1
B. 
C. -1
D. 0
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