Kaylie bought <em>6 biscuits </em>and <em>1 cup of coffee</em><em>, </em>the price of the coffee is <em>$2</em><em> </em>per cup, the price of the biscuits is <em>$1</em> per biscuit, so the price of the biscuit and the price of the coffee together is: <em>$8</em>.
<span>f(x) = 2(3x) Exponential functions represent the initial value outside of the parentheses so if 2 is the initial value it has to be on the outside of the parentheses. Exponential growth formula. </span> <span>a represents the initial value.</span>