We can solve this problem by using PEMDAS
PEMDAS stands for
Parenthesis
Exponents
Multiply
Add
Subtract
So start with (P+3) () is a parenthesis
<span>y = 3x + 2</span><span>3x – y = 2</span><span>3x – y = 1 </span><span>3x + y = 1</span>
You'd have to get 112 out of 140 in order to get an 80% right on the dot
21/2 = 10 1/2 10 1/2 x 3 = 31 1/2
31 1/2 miles is how much she runs in a week
so then you multiply this by six, 31 1/2 x 6 which is 189 miles
So Jill runs 189 miles