Write the number in standard notation.3.49 × 107
A. 349,000,000
B. 3,490,000
C. 244.3
D. 34,900,000
Answer: D
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Solve.The surface speed S in fpm (feet per minute) of a rotating cylindrical object is S = 
,where d is the diameter of the object in inches and n is the rotation in rpm (revolutions per minute). If a grinder has a surface speed of 7500 fpm and a rotation speed of 4777 rpm, what is the diameter of the grinder? Use ? = 3.14.
Fill in the blank(s) with the appropriate word(s).
Write the solution set to the inequality in interval notation.x > -9
A. (-?, -9) B. [-9, ?) C. (-?, -9] D. (-9, ?)
Find the range of the quadratic function in interval notation.f(x) = -(x + 2)2 + 5
A. (-?, 2] B. [-2, ?) C. (-?, 5] D. [5, ?)
Find: a. The center and radius of the circle. b. The x- and y-intercepts of the graph of the circle.x2 + y2 - 4x + 4y - 1 = 0
A. a. center = (-2, -2); radius = 3
b. (2 + 
, 0), (0, -2 + 
)
B. a. center = (-2, 2); radius = 9
b. (2 + 
, 0), (0, -2 + 
)
C. a. center = (2, -2); radius = 3
b. (-2 + 
, 0), (-2 - 
, 0), (0, 2 + 
), (0, 2 - 
)
D. a. center = (2, -2); radius = 3
b. (2 + 
, 0), (2 - 
, 0), (0, -2 + 
), (0, -2 - 
)