<PRE><B>Question 370967</B>
&lt;br&gt;&lt;font face=&quot;Tahoma&quot;&gt;When dealing with functions, and values of functions, there is usually a very straightforward way to solve these types of questions.&lt;br&gt;

In general, whenever you see the variable, in this case s, just replace the variable with the given number, in this case: 1, -10, and 6.9&lt;br&gt;

F(s)=8s+7&lt;br&gt;

F(1)=8*1+7=8+7=15&lt;br&gt;

F(-10)=8*(-10)+7=(-80)+7=(-73)&lt;br&gt;

F(6.9)=8*(6.9)+7=55.2+7=62.2&lt;br&gt;

So we now know:&lt;br&gt;

F(1)=15&lt;br&gt;

F(-10)=(-73)&lt;br&gt;

F(6.9)=62.25&lt;br&gt;

I hope this helps!&lt;br&gt;</PRE>