Hello,
Since Jamal is only paying for 7/10 of the asking price, we can multiply it by 0.7.
0.7 x 18950 = 13265
Now, we have to add on the tax, so we should multiply the new amount by 1.065.
13265 x 1.065 = 14127.23
Jamal's bill will be $14,127.23
Good luck,
MrEQ