10th grade algebra help

Question

1. Kyle throws a baseball straight up from a height of 5 feet with an initial speed of 41 feet per second What is the maximum height of the baseball?

A. 1.281ft

B. 5ft

C. 18.133ft

D. 31.266ft

2. Phillip has 250 yards of fencing and wishes to enclose a rectangular area against a pre- existing fence. What equation should Phillip use to help him maximize the area?

A. F(x)=x(250-2x)

B. F(x)=x(250+2)

C. F(x)=2x(250-x)

D. F(x)=2x(250-x)

3) f(x) = x ^ 3 + 1 and g(x) = - x + 1 

(what is the value of (fg)(-2)?

4) Mrs Lowe has 36 meters of fencing to enclose a rectangular pen next to a wall. The wall will be used as one of the sides of the enclosed area What is the maximum area in square meters that will be enclosed?

5) The height, in feet, after x seconds of an object launched straight up can be found by the tionh(x)=-16x^ 2 +v 0 x+h 0 where v 0 is the initial velocity of the object and h 0 is the initial height A cannon ball is launched straight up into the air from a height of 120 ft with an initial velocity of 40ft / s . After how many seconds does the ball hit the ground? Do NOT round your answer

Answer 1