The following two ratios form a proportion 4/5 and 8/10. true or false (I need quick answers pls)

Afruit stand has to decide what to charge for their produce. they need $10 for 4 apples and 4 oranges. they also need $15 for 6 apples and 6 oranges. we put this information into a system of linear equations. can we find a unique price for an apple and an orange?

Use set builder notation to represent the following set: { -3, -2, -1, 0}

Which number completes the inequality? 2/3 < _ < 7/9