The number of minutes needed to solve an exercise set of variation problems varies directly as the number of problems and inversely as the number of students working on the solutions. It takes 4 students 36 minutes to solve 18 problems. How many minutes will it take 6 students
to solve 42 problems?
Make sure to show the correct equation set up, identify your "k" value,

What is the equation of the graph below? y=sec(x)-4

The magnitude, m, of an earthquake is defined to be m=log l/s, where i is the intensity of the earthquake (measured by the amplitude of the seismograph wave) and s is the intensity of a “standard” earthquake, which is barely detectable. what is the magnitude of an earthquake that is 1,000 times more intense than a standard earthquake? use a calculator. round your answer to the nearest tenth.

Which of the following parabolas opens up?