Factor and simplify the expression.tan4x - sec4x
A. sec2x + tan2x
B. sec2x
C. -2 tan2x - 1
D. tan2 - sec2x
Answer: C
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Simplify the radical expression.
A. 11 B. 5 C. ±5 D. 25
Provide an appropriate response.Explain the difference between saying "Subtract 3.9 from 7.5" and saying "3.9 minus 7.5."
What will be an ideal response?
Identify the exponent and the base, and then simplify the expression.153
A. exponent: 15, base: 3, simplified: 45 B. exponent: 45, base: 3, simplified: 15 C. exponent: 3, base: 45, simplified: 3375 D. exponent: 3, base: 15, simplified: 3375
Solve the problem.The table lists how financial aid income cutoffs (in dollars) for a family of four have changed over time. Use the midpoint formula to approximate the financial aid cutoff for 1985. 
A. $21,000 B. $18,000 C. $36,000 D. $57,000