( t^15/27x^9 ) ^-2/3

Please solve this
it is fraction with a negative fraction exponent

The perimiter of a rectangle is 70 inches the legneth of the rectangle is 5 less than 3 times the width of the rectangle what is the width of the rectangle

Need this asap if anyone can i would be very grateful. if you could show workings that would really

1. find the area of the unshaded square 2. find the area of the large square 3. what is the area of the frame represented by the shaded region show