Question

Suppose that during one period of extreme cold, the

average daily temperature decreased 15 °F each day.

How many days did it take for the temperature to

decrease by 9 °F?

Answer 1

Answer:

6 Days

Step-by-step explanation:

Let the number of days be $x$.

Given:

Daily temperature decreased by 1.5 °F in each day.

So, the temperature decreased in $x$ days is $1.5x$.

Therefore the temperature decreased by 9 °F in $1.5x$ days.

The equation is $1.5x=9$

$x=\frac{9}{1.5}$

$x=6$

The temperature decreased by 9 °F in 6 days.