c
step-by-step explanation:
answer: approximately 206 bones
i hope this u out a branlist and a would be greatly appreciated :
x² + 3x + 7 = 0 [ax² + bx + c]
a = 1
b = 3
c = 7
quadratic formula:
(+/- is this ±)
plug in the numbers into the variables
your answer is a