I need help with both problems, one is also fine. Please help, this is matrices algebra.

1. during first 10 seconds 2. between 10 seconds and 35 seconds 3. during 35 seconds to 40 seconds

Which of the following would be a good name for the function that takes the weight of a box and returns the energy needed to lift it?

The rectangle shown has a perimeter of 108 cm and the given area. its length is 6 more than five times its width. write and solve a system of equations to find the dimensions of the rectangle.