Help with the $9\mathrm{.}9$ please, I put the $9\mathrm{.}10$ so that it is taken into account and they do not solve it with that information:

$9\mathrm{.}9$ At the beginning of the compression process in an air$-$standard Otto cycle, $1=14\mathrm{.}7$ lbf$/$in$^2,1=530$R$.$ The compression ratio is $8.$ Plot the thermal efficiency and mean effective pressure, in lbf$/$in$^2,$ for maximum cycle temperatures, ranging from $2000$ to $5000$R and compression ratios of $6,8,$ and $10.$

$9\mathrm{.}10$ Solve Problem $9\mathrm{.}9$ on a cold air$-$standard basis using k$=1\mathrm{.}4.$