Answer:
I think its A........ I don't really know.
Step-by-step explanation:
5 x 2 = 10
3.14 x 10 = 31.4
One answer could be 2 as 2^2 is 4 and 2+2 also equals 4
Multiply $530.40 by 3/4. You get the equation

If you simplify this, you get the solution of $397.80
$397.80
D. y = 6x...subbing in (2,12)...x = 2 and y = 12
12 = 6(2)
12 = 12 (correct)
so (2,12) is a solution to : y = 6x