Multiply.(-7)(3)
A. -21
B. -210
C. -121
D. -24
Answer: A
Mathematics
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Find the average value of the function over the region.f(r, ?, z) = r2 over the region bounded by the cylinder r = 8 between the planes z = -7 and z = 7
A. 
B. 14,336?
C. 32
D. 
Mathematics
Rewrite the equation in standard form. Find the center and radius of the circle.x2 + y2 + 16x + 63 = 0
A. (x - 8)2 + y2 = 1 center (8, 0), r = 1 B. (x + 8)2 + y2 = 1 center (8, 0), r = 1 C. (x + 8)2 + y2 = 1 center (-8, 0), r = 1 D. x2 + (y + 8)2 = 1 center (0, -8), r = 1
Mathematics
Write the expression in exponential notation.4 ? 4 ? 4
A. 3 ? 4 B. 41 C. 34 D. 43
Mathematics
Shade the region in the xy-plane that satisfies the system of inequalities.
+ 
? 1
+ 
? 1
A. 
B. 
C. 
D. 
Mathematics