Let x be a number. Translate the English phrase or sentence into a mathematical expression. The difference of a number and 20
A. 20x
B. 20 - x
C. x - 20
D. 20
Answer: C
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Find the quotient and the remainder.-8x3 - 10x2 + 17x - 16 divided by -2x - 5
A. 4x2 - 5x + 4; remainder 0 B. 4x2 - 5x + 4; remainder 4 C. x2 + 4; remainder -5 D. 4x2 - 5x + 4; remainder 7
Add or subtract, if possible. Assume that all variables represent non-negative values. Simplify your answer. 6 
- 6
+ 4 
+ 4
A. 10 
- 2
B. 10 
- 2
C. 8
D. 10 
- 2
Determine whether there is a maximum or minimum value for the given function, and find that value.f(x) = -x2 + 9x - 7
A. Maximum: 
B. Maximum: - 
C. Minimum: -7
D. Minimum: 
Provide an appropriate response.The series of sketches below starts with an equilateral triangle having sides of length 1 (one). In the following steps, equilateral triangles are constructed by joining the midpoints of the sides of the preceding triangle. Develop a formula for the length of the sides of the nth new triangle.
What will be an ideal response?