(a)[1]
Complete the table for the function $y = \frac{4}{5} \times 2^x$.
(b)[3]
On the grid, draw the graph for $y = \frac{4}{5} \times 2^x$ over $-3 \le x \le 3$.
(c)[2]
By drawing a tangent, estimate the gradient of $y = \frac{4}{5} \times 2^x$ at $x = 2$.
(d)[1]
Use your graph to estimate the value of $x$ that solves $4 \times 2^x = 5$.