Given that log 2 = x, log 3 = y and log 7= z, express the following expression in terms of x, y, and z: a) log 0.3
b) log 200

The  height must be greater han 300 ft above the ground, then d> 300
the inequality will be:
-16t²+1000> 300

we can solve this inequality.
  -16t²+1000> 300
-16t²> 300-1000
-16t²> -700
-t²> -700/16
-t²> -43.75
t²< 43.75
t< √43.75
t< 6.61  or  (0 ,  6.61)

answer: the inequality willl be : -16t²+1000> 300,  and the interval of time taken by the object to reach the height greater than 300 ft above the ground will be (0 , 6.61) seconds.