Find the cross-product and determine whether the proportion is true or false.
= 
A. 120 = 120; true
B. 200 ? 72; false
C. 240 = 240; true
D. 60 ? 240; false
Answer: A
Mathematics
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Use properties of exponents to simplify the expression. Express answer in exponential form.
A. 4-2 B. 4-15 C. 42 D. -48
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Determine whether the polynomial is a perfect square trinomial, a difference of squares, or neither.36x2 + 24x + 4
A. Difference of squares B. Perfect square trinomial C. Neither
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Solve and graph. Write the result in interval notation.3x ? 18
A. (-?, 6)
B. (-?, 6]
C. [6, ?)
D. (6, ?)
Mathematics
The curve with the equation 
is called an asteroid. Find an equation of the tangent to the curve at the point 
Mathematics