Solve the polynomial equation graphically or numerically. Round to the nearest hundredth if necessary.x4 + 15x3 + 49x2 - 15x - 50 = 0
A. -10, -5, -1, 1
B. -1, 1, 5, 10
C. -5, -1, 1, 10
D. -10, -5, 1, 1
Answer: A
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Solve the problem.Ozone levels inside a building should not exceed 50 parts per billion (ppb). In a scientific study, an air filter was able to remove 44% of the ozone entering a building. Approximate the range of ozone concentrations in outside air that this filter will reduce to an acceptable level.
A. 71 ppb ? x ? 89 ppb B. x ? 89 ppb C. x ? 89 ppb D. x ? 107 ppb
Simplify the expression. If any variables exist, assume that they are positive.6
- 3
- 
A. 14x
B. 2x
C. 3x
D. 15x
Simplify by first converting to rational exponents. Assume that all variables represent positive real numbers.
A. 3z
B. x4
C. x36
D. 
Decide whether the perimeter or area would be used to solve a problem concerning the measure of the quantity.Measuring a garden for tilling
A. Area B. Perimeter