You should find that your system doesn't have solutions. This is also confirmed by the fact that the determinant of the matrix of the coefficient of the variables x, y and z is equal to zero.
Since these two coordinates are on the same Y-axis, we can assume that this is a straight line and do not need to create a triangle and solve for the hypotenuse. The distance from -8 to 0 is 8, and the distance from 0 to 7 is 7. Meaning that the distance between the two points is 15 units.
Answer: The value of the gift certificate is $140.
Step-by-step explanation:
Let the worth of gift certificate be 'x'.
Number of families = 4
Amount that each family is contributing = $35
According to question, we need to write a division equation:
So, the value of the gift certificate is $140.