Which of the following is equivalent to the expression below? (a 2 - 2b2+3) -(462-5)+(3a 2+4)
A. 4a2-6b2+12

B. 4a2-6b2+2

C. 4a2+2b2+2

D. 4a 2+262 +12

answer

you start with $5 and save $10 a week until you have at least $45wer

step-by-step explanation:

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.

the answer for the question that you are asking is 4