1. 12 mph, 24 miles
2. m=4, y=22
3.15/1, $1500
4. x=30 y=60, k cheaper, j cheaper
Answer:

Step-by-step explanation:
Rewrite the system of equations as:

Subtract the second equation from the first to isolate
:

Plug in
into any of the equations above and solve for
:

Verify that the solution pair
works 
Therefore, the solution to this system of equations is:

Answer:Your poopoo
Step-by-step explanation:
X = 180 - (90 + 47)
x = 180 - 137
x = 43
answer angle x = 43
The area of a triangle is base length x height then divide all by 2,
so 12 x 10 /2
=60 ft²