Guillermo earned $15.25 per hour for 25 hours of work. what was he paid?

The sum of the product of 4 and x and the product of 7 and y is 61. the sum of the product of 12 and x and the product of 21 and y is 61. what are the values of x and y?

[10 points, algebra 2]according to my answer key the restrictions are -1 and 4. but why not positive 1?

Moira has a canvas that is 8 inches by 10 inches. she wants to paint a line diagonally from the top left corner to the bottom right corner. approximately how long will the diagonal line be?