(i)[3]
If $\frac{1 + 4y}{3 + 2^y} = 5$, determine the value of $2^y$.
(ii)[2]
Apply logarithms to calculate the value of $y$, accurate to $3$ significant figures.
Mathematics 9709 · AS & A Level · Logarithmic and exponential functions
Mathematics 9709 · AS & A Level · Logarithmic and exponential functions
If $\frac{1 + 4y}{3 + 2^y} = 5$, determine the value of $2^y$.
Apply logarithms to calculate the value of $y$, accurate to $3$ significant figures.