Answer: think A
Step-by-step explanation:
Easy
y=2x-7
sub 2x-7 for every y you se inother equation
x+2(2x-7)=1
x+4x-14=1
5x-14=1
add 14 both sides
5x=15
divide 5
x=3
sub back
y=2x-7
y=2(3)-7
y=6-7
y=-1
(3,-1) is solution
Multiply two kilometers per day by 1000 meters per kilometer to get 2000 meters per day. Multiply by two days to get 4000 meters, which is the answer.
It's (10-7)=3 wide and (17-7)=10 high
So the perimeter is
P=2(3+10)=26 units
