Rewrite as a base to a power, if possible.82 ? 89 ? 88
A. 819
B. 8144
C. 512144
D. 51219
Answer: A
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Graph the function.y = -3 cos x 
A. 
B. 
C. 
D. 
Multiply.0 × 5 × 9
A. 55 B. 45 C. 14 D. 0
Write the expression as the sine, cosine, or tangent of a double angle. Then find the exact value of the expression.cos2 22.5° - sin2 22.5°
A. 
B. - 
C. - 
D. 
Find the equation of the line that seems to best fit the data. Use the model to estimate the elongation of the spring when a force of 70 kilograms is applied. Round your answer to one decimal place.
Hooke’s Law states that the force F required to compress or stretch a spring
(within its elastic limits) is proportional to the distance d that the spring is compressed or
stretched from its original length. That is, where k is the measure of the stiffness of
the spring and is called the spring constant. The table below shows the elongation d in
centimeters of a spring when a force of F kilograms is applied.
A) 2.3 centimeters
B) 4.6 centimeters
C) 6.9 centimeters
D) 9.2 centimeters
E) 3.5 centimeters