What fraction pairs are equivalent​ fractions?1/8 and​ 1/2 1/8 and​ 2/16 1/8 and​ 8/32 ​1/8 and​ 3/9

Campus rentals rents 2 and 3 bedrooms apartments for $700 ans $900 a month respectively. last month they had six vacant apartments and reported $4600 in lost rent. how many of each type of apartment were vacant?

Scores on a university exam are normally distributed with a mean of 78 and a standard deviation of 8. the professor teaching the class declares that a score of 70 or higher is required for a grade of at least “c.” using the 68-95-99.7 rule, what percentage of students failed to earn a grade of at least “c”?

Hurry which expression is equivalent to 3√x^5y?