Use scientific notation to calculate the answer to the problem. Write the answer in scientific notation.
A. 3 × 109
B. 0.3 × 108
C. 3 × 1010
D. 0.9 × 1011
Answer: C
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Use the distributive property to multiply. Then, if possible, simplify the resulting expression.20 
A. 5x + 4
B. 5x + 
C. 5x + 
D. 20x + 4
Point P sweeps out central angle ? as it rotates on a circle of radius r. Find the angular velocity of point P.
?
?
If the answer needs rounding, round it to three significant digits.
?
__________ rad/sec
What will be an ideal response?
Solve the system of equations using substitution.
A. x = 4, y = -5; x = 5, y = -4 or (4, -5), (5, -4) B. x = -4, y = 5; x = -5, y = 4 or (-4, 5), (-5, 4) C. x = -4, y = -5; x = 5, y = 4 or (-4, -5), (5, 4) D. x = 4, y = 5; x = 5, y = 4 or (4, 5), (5, 4)
Multiply, and then simplify if possible. Assume all variables represent positive real numbers.
(
+ 
)
A. 7
+ 7
B. 49
+ 7
C. 7
+ 49
D. 21 + 49