Which of the following numbers can be expressed as repeating decimals? 5 over 7, 4 over 5, 7 over 9, 5 over 8

7 over 9 and 5 over 8
5 over 7 and 4 over 5
5 over 7 and 7 over 9
4 over 5 and 5 over 8

The only one that works is 7/9

Step-by-step explanation:

The answer would be 0.7 repeating. The seven repeats

4/5 is 0.8 so that doesn’t work

5/8 is 0.625 so that doesn’t work

7/9 would be the answer

The vertex is a maximum for f(x) and a minimum for g(x).  This is because the squared term is never negative.

Because the larger the squared term is, the smaller f(x) is, f(x) is at MOST 5.  Similarly, because the larger the squared term is, the larger g(x) is, g(x) is at MOST -3.