S(x)=3x²
t(x)=4x
(t*s)(-2)=(3x² * 4x)(-2)=(12x³)(-2)=-24x³
Answer: (t*s)(-2)=-24x³
She spent 21 minutes completing the math problems. But then you add the 9 minutes she spent checking. Your answer is 30 minutes in total
The price of the Xbox One after tax is $265
<h3><u>
Solution:</u></h3>
The price of a Xbox one is $250
The tax on Xbox one is 6%
Now, the tax of 6% on 250 is calculated as follows:-

So, the tax on Xbox one is $15
The total price of box including tax can be calculated by adding price of box and tax on box
<em>Total price of Xbox after tax = actual price of the Xbox One + Tax on the Xbox One
</em>
= $250 + $15
= $265
Hence, the price of the Xbox One after tax is $265
Which question are you wanting answered its hard to tell