Answer:
Ax + By = C the answer is C 1/2x+2y=7
Step-by-step explanation:
The center (-4,1) and vertices (-10,1) and (2,1)
and foci is (-4, - sqrt61, 1) and ( -4 + sqrt 61, 1)
The first thing you should do is to<span> divide the total cost by the unit cost you have got: </span><span>(2y^2 + 6) / (y^2 - 1) </span>
Then just use simple math by plugging in the value y=3
(2*3²+6): (3²-1)= 24:8 = 3 which is the nubmer of the bought notebooks.
<span>In total he spent $24 on notebooks that cost $8.</span>
