Solve the problem.A ball is thrown vertically upward with an initial velocity of 160 feet per second. The distance in feet of the ball from the ground after t seconds is 
For what intervals of time is the ball less than 384 above the ground (after it is tossed until it returns to the ground)?
A. {x ? 0 sec < x < 4.5 sec and 5.5 sec > x > 10 sec}
B. {x ? 4 sec < x < 6 sec}
C. {x ? 0 sec < x < 3.5 sec and 6.5 sec > x > 10 sec}
D. {x ? 0 sec < x < 4 sec and 6 sec > x > 10 sec}
Answer: D
Mathematics
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Factor.5c4 - 625cd3
A. 5c(c - 5d)(c2 + 5cd + 25d2) B. 5c(c + 5d)(c2 - 5cd + 25d2) C. c(c + 5d)(c2 - 5cd + 25d) D. 5(c + 5)(c2 - 5c + 25)
Mathematics
Solve the equation.2(2x - 3) = 3(x + 4)
A. {-6} B. {18} C. {8} D. {-18}
Mathematics
Multiply.6(3 ? x)
A. 12x B. 8x C. 180x D. 18x
Mathematics
Solve the problem.Write an equivalent statement using the distributive property.5
+ 15
=
A. (5 + 15)
B. (75)
C. (5 + 15)
D. (75)
Mathematics