We can set this problem up as an algebraic equation, which we can then solve to find our answer.
We start at -3. So we can start our equation with that:
However, this doesn't represent any change in temperature, just that we start at -3. To show change, we will use the variable 
, where stands for the number of hours. Each hour accounts for a change of -2.5 in degrees, meaning that we must multiply our by -2.5. We can now add this term into our equation:
We are trying to find when we will reach -18 degrees, so we will set our entire equation equal to -18 and solve:
It will take us 6 hours, or choice A.
One week= 7 days
25-18=7
I believe both vacations are the same amount of time
The <em><u>correct answers</u></em> are:
reciprocal
; negative
; additive inverse
; and multiplicative inverse
.
Explanation:
The opposite of a number in is a negative. The number we can add to a number to get 0, or the opposite of a number as far as addition goes, is its additive inverse.
The number we can multiply to a number to get 1, or the opposite of a number as far as multiplication goes, is its multiplicative inverse. It is also called the reciprocal of the number.
