Solve the problem.If an object is propelled upward from a height of 80 feet at an initial velocity of 80 feet per second, then its height after t seconds is given by the equation 
, where h is in feet. After how many seconds will the object reach a height of 180 feet?
A. 5 sec
B. 2.5 sec
C. 1.3 sec
D. 10 sec
Answer: B
Mathematics
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A. (2 + x)(4 - 2x + x2) B. (2 + x)(4 - x2) C. (2 - x)(4 + 2x + x2) D. (2 - x)(4 + x2)
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Give the genus of the object.A pair of eyeglass frames with no lenses
A. Genus 0 B. Genus 2 C. Genus 3 or more D. Genus 1
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Solve the inequality and graph the solution set.x - 2 < -6
A. {x 
}
B. {x 
}
C. {x 
}
D. {x 
}
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Solve the triangle. 
A. c = 8.6, A =44.8°, B = 30.2° B. c = 10.6, A = 30.2°, B = 44.8° C. c = 9.6, A = 44.8°, B = 30.2° D. c = 9.6, A = 30.2°, B = 44.8°
Mathematics