Answer:
D.
Step-by-step explanation:
First off, because the temperature is decreasing, that means the final answer would be negative, or we can also say that there would be a -1 to be multiplied by the change.
Each hour temperature changes by 7. The question also says that temperature keeps on changing for 3 hours. Therefore the temperature change would be by 3 7's, or 7+7+7.
Lastly, add the -1 from the beginning since it is a negative temperature change, the answer is (-1)(7+7+7)
Answer:
25% of 210:
73.5
-----------------
175% of 210:
83.33333333 ~~ (on and on forever)
Step-by-step explanation:
Answer:
We only need to calculate the 15% of 44.99 and 49.99 and sum them, for that, we have to multiply each number by 0.15:
44.99 * 0.15 + 49.99 * 0.15 = 14.27
He saved 14.25 (you should put the unit it's).
We could also have done a rule of three (which is what we have really did before)
44.99 - 100%
x - 15%
x =
=. 6.75
49.99 - 100%
x - 15%
x =
= 7.5
6.75 + 7.5 = 14.25