What is the limit as x approaches negative infinity of (1.001)^x

To answer this question we need to know that because x will always be negative, it is the same as saying lim as x approaches infinity of 1/(1.001)^x. That is why we can say that the denominator will get bigger and bigger, making the fraction and therefore the limit closer and closer to 0. 

It’s 15 centimeters since it’s 9 units long. 10cm is 6 units and then you have 3 units left. Half of 6 is 3 so in order to find the cm for the last 3 units you divide by 2. So 10+5=15