Answer:
3
Step-by-step explanation:
in slope-intercept form, the slope is the x's coefficient, which in this case is 3,
so, m=3
Y = -2x + 3
Hope that helps.
For this case the first thing you should know is the following unit conversion.
1 BTU = 0.25 Kilocalories
We then have the following numerical value:

Applying the conversion of units we have:

Canceling units we have:
Answer:
This is 20000 kilocalories per hour
3.5 × 10 = 35.0
The mistake is that you only added a zero to the answer (3.5 -> 3.50), but you forgot to replace the point in your answer (because 3.50 is wrong and 35.0 is correct). Hence, you should have replaced to point, by moving it one spot to the right.