One patterned blue fabric sells for $15.00 every two yards and another sells for $37.50 every 5 yards do these fabrics have the same unit cost explain

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers

The lengths of all sides of a triangle are integers when measured in decimeters. one of the sides has length of 1 dm and another of 3 dm. find the perimeter of the triangle.'

Which value of m will create a system of parallel lines with no solution? y= mx - 6 8x - 4y = 12