Mark is solving the equation 4x^2 = 12x - 9 using the quadratic formula.
which values could he use for a, b and c?
question options:

a = 4, b = -12, c = 9

a = 4, b = 9, c = -12

a = 4, b = 12, c = -9

a = 4, b = -9, c = 12

the correct answers i think are b. and d.

give me brainliest if it is correct!

let x and 400 - x be the two numbers.  

==> 0.80x + 0.85(400 - x) = 400 - 68 from the statement of the problem.  

< ==> 0.80x + 0.85(400 - x) = 400 - 68  

==> 340 - 0.05x = 332  

< ==> -0.05x = -8 ==> x = 160, the first number ==> 400 - x = 240, the second number.

c.the first excerpt shows their expectations about the camp, and the second shows the reality of their circumstances

is the answer this is because first they talk about what is expected of the camp but in the second excerpt they get a harsh awakening to the true realities of the camp.

hope this

i would appreciate brainliest : )