8x + 5 > 45

what is the value of x?

Aswimming pool measures 22ft by 12ft and is 4ft deep. if the pool is being filled at 2.5 cubic ft per minute, how long will it take to fill the pool?

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ah=4 and hc=1, find bh.

The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.