Answer:
No. They are not equivalent.
The provided equation is not an identity.
Answer:
Yearly Cost per each magazine=$23
Since there are 12 months in every year,
$23 × 12 =yearly cost
Therefore, $276 is equal to the yearly cost
210 ÷ 6 = 35 miles to the gallon
280 ÷ 35 = 8 gallons for 280 miles
Equation 1: 4y+2x= 4
equation 2: 4y+6x=8
4y+2x=4
-
4y+6x=8
—————
-4x=-4
x=1
plug back in 4y+2=4
4y=2
y=1/2
solution at (1, 1/2 )