Tower one- 2145046422.09Tower two- 8947346861.26
Both together- 11092393283.4
"0.32 with a line above it" could refer to two possible numbers, either

or

.
In either case, 0.32 will be the smaller of the two numbers simply because it terminates with two digits after the decimal point, while the others keep going, basically adding a small positive number to 0.32.
C^2+7 would equal 88. the first equation states that C=9, so you can just plug in 9 for C
If I am reading this equation right the answer would just be 0 because anything times zero is zero