Fadil sells televisions. He earns a fixed amount for each television and an additional $30 if the buyer gets an extended warranty. If fadil sells 18 televisions with extended warranties, he earns $1,710. How much is the fixed amount fadil earns for each televisions

There are many ways you can do this. To me, the easiest way is cross multiplying, but since the denominators are the same, there is no need to do that. Also, the fractions are negatives, the one closest to 0 is closer to the surface of the pool
-4/5 = -2/5 in this case -2/5 is closer to the surface of the pool.

the boy's feet are closer to the surface of the pool