20 points + brainliest

Thank you best answer gets brainliest

A, because it’s stating one less, so that automatically tells you 1-. After, it says “x squared” so you would put 1-x^2! (Basically A) hope this helped !!

1. isolate the variable, in this case, d. subtract 35.5 on both sides of the equation.2. 52 subtracted by 35.5 is 16.53. therefore your answer would be d= 16.5this is the basics of pre algebra, isolating variable through adding, subtracting, multiplying, and dividing, if you have any other questions to ask just comment!