I’m pretty sure that the answer is D
Y = kx - 8. The variable k can be any negative value.
We are given with three lengths of a triangle expressed in terms and variables: (3x – 4) feet, (x^2 – 1) feet, and (2x^2 – 15) feet. The perimeter of the triangle is equal to the sum of the three sides of the triangle. In this case, the sum is 3x^2 + 3x -20. When x is equal to 4, we substitute <span>3*16 + 3*4 -20 equal to 40 feet.</span>
90 + 20x + 10x = 180
30x = 90
x = 3
The answer is 3!
explanation; 3x10 equals 30. the difference is 27 years and 30-3=27!
