Step-by-step explanation:

Equal sets have the exact same elements, so they must have the same number of elements. Therefore, equal sets must also be equivalent. No, not all equivalent sets are also equal sets
The unit rate for 'y' is 1/8 per x .
The unit rate for 'x' is 8 per y .
46/69 * 100
0.66666*100
which is 66percent