This is the hardest question I've answered all day.
One way to find a sub-total is by *simply* adding everything together, and a example would be below, buy yeah, you just add everything together.
For example:
Cookies (item # 594993) $2.98
Cake (item # 4354533) $4.50
Vans low tops (item # 594939) $60.00
Vans socks (item # 598993) $15.00
And just by adding all this, that how you would find the subtotal. Hope this helps! ;)
Answer: 789 calories burned while combining diet with 2 hours of exercise
Step-by-step explanation:
we have that
we know that
substitute
Find 
For x=2 hours
substitute
therefore
The answer is
789 calories burned while combining diet with 2 hours of exercise
To do this make x and y equal 0, y-intercept is at x=0, and x-intercept is at y=0:
x-intercept:
2x+7(0) = -14
2x = -14
x = -7
y-intercept:
2(0) + 7y = -14
7y = -14
y = -2
