Answer:
slope is 5/40 and she burns 1.25 calories
30 because 5and 10 have a least common multiple of 20 but including 15 it is 30 since 15 and 10 are the only important numbers
You have the formula, all you need to do is input all the variables given to you in the formula.
I=Prt
=> I=3000*0.06*2
=> I=360
For it to be a solution, it has to satisfy both inequalities...
subbing in (-4,-1)
2x + y < -5 -x + y > 0
2(-4) - 1 < - 5 -(-4) - 1 > 0
-8 - 1 < -5 4 - 1 > 0
-9 < -5.....true 3 > 0....true
solution is (-4,-1)