Express the statement as an equation involving the indicated variables.The volume V of a sphere is 
times ? times the cube of the radius r.
A. V = 
?r
B. V = 
? 
C. V = 
?r2
D. V = 
?r3
Answer: D
Mathematics
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Determine where the function is increasing and where it is decreasing.f(x) = -4x2 - 2x - 3
A. decreasing on 
increasing on 
B. increasing on 
decreasing on 
C. increasing on 
decreasing on 
D. increasing on 
decreasing on 
Mathematics
The line graph shows the recorded hourly temperatures in degrees Fahrenheit at an airport. 
At what time was the temperature 72°?
A. 9 a.m. and 10 a.m. B. 6 p.m. C. 9 a.m. D. 10 a.m.
Mathematics
Convert the units using unit fractions.20 c = 
pt
A. 40 B. 80 C. 10 D. 160
Mathematics
Factor completely. If the polynomial is prime, state this.x4 - 16
A. (x2 + 4)(x - 2)(x + 2) B. (x + 2)2(x - 2)2 C. (x2 + 4)(x2 - 4) D. (x2 - 4)(x - 2)(x + 2)
Mathematics