James has four video tapes. each one contains 120 minutes of recorded music video. what is the total length of time recorded on all the videotapes.

The mean temperature for the first 4 days in january was 7°c. the mean temperature for the first 5 days in january was 5°c. what was the temperature on the 5th day?

Write 17/20 as a decimal and as a percent.

Find the number of real number solutions for the equation. x2 + 5x + 7 = 0 0 cannot be determined 1 2