Identify the zeros of the quadratic function. A)
x= 1 and x = -3
x= -1 and x = 3
C)
y = -1 and y=-3
D
y = -1 and y= 3

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!