Answer: <em>$90.00</em>
Step-by-step explanation:
<em>Take this equation </em>
<em>120(n)</em>
<em>n will equal 0.75 since it is 75% of the original price</em>
<em>120(0.75)</em>
<em>$90.00</em>
Let's see how much it would cost for 8 batteries by each package
1) 3.92 x 2 = 7.84
2) 7.60
the second package as it would be much cheaper
It is the last answer choice (6x-9y)(6x+9y)
9514 1404 393
Answer:
A. (3, 3)
Step-by-step explanation:
The coefficients of y are opposites, so adding the two equations will eliminate y.
(x +2y) +(3x -2y) = (9) +(3)
4x = 12 . . . simplify
x = 3 . . . . . divide by 4
Using the first equation, we can find y:
3 +2y = 9 . . . . . .substitute for x
2y = 6 . . . . . . . . subtract 3
y = 3 . . . . . . . . . . divide by 2
The solution is (x, y) = (3, 3).
_____
<em>Additional comment</em>
For this problem, it is easy to just try the answers. You don't have to go far to show the first answer (A) satisfies both equations.
3 + 2(3) = 9; 3(3) -2(3) = 3