If you loan $500 to a friend for 6 months and charge $50 total in interest, what is the annual simple interest rate?

The ratio of rock songs to dance songs on jonathan’s mp3 player is 5: 6. the total number of rock and dance songs jonathan has is between 101 120. how many rock songs does he have?

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?

In an equilateral triangle, each angle is represented by 5y+3. what is the value of y? a. 9.7 b. 10.8 c. 11.4 d. 7.2