Answer:
square root of 81
square root of 1000
square root of 34
square root of 169
Step-by-step explanation:
The customer will pay $24.00 for a dress normally priced at $30.00
(9x-1)^-1/2 - (x+2)(9x-1)^-1/2
= (9x-1)^-1/2( 1 - (x + 2))
= (9x-1)^-1/2(-1 - x)
= -(x + 1)(9x-1)^-1/2
= -(x + 1) / (9x-1)^1/2