28:36
Divide both by 4 to get
7:9
Given exponential function:

Let us obtain three points including the y-intercept so that we can plot the function y = f(x)
When x =0:

when x =1:

when x =2:

We have the points : (0, 1), (1, 1/5), and (2, 1/25)
Using these points, let us provide a sketch of the plot of y =f(x). We have the plot as shown below:
<span><span>8x</span>+<span>10y</span></span>=<span>9
Hope this helps.</span>