7. "When taking the derivative of y=log10 with respect to x, there's no need to include the term 'ln10' in the derivative, because y=log10 is a special function just like =ln" Is this statement true or false?

8. Elasticity of demand also demonstrates how price and quantity demanded of a product can be expressed as functions of each other." Is this statement true or false?

9. When x increases, the instantaneous rate of change of the function = increases exponentially just like the function value of = does." Is this statement true or false?