8x + 4y = 16
x + 7y = 15
multiply second equation by (-8)
-8x - 56y = -120
so now
8x + 4y = 16
-8x - 56y = -120
-----------------add
-52y = -104
y = 2
7(2) = 15 - x
14 = 15 - x
x = 1
answer is C.
(1, 2)
Barret saves $2.50 initially and then $1.25 per month by joining the art museum instead of the science museum.
i dont understand the question
She eats 10 her first week so she eats 3 pieces for the next six weeks (3 each week)
10 + 3(6) = 28
10+3+3+3+3+3+3=28
7th term is 28
Arithmetic sequence