1. You have:
FV=PV(1+i)(1+j)
FV is the future value.
PV is the present value (PV=$750).
i=10.5%=0.105
j=7.5%=0.075
2. Therefore, you only have to substitute these values into the formula FV=PV(1+i)(1+j) to obtain the Future value:
FV=PV(1+i)(1+j)
FV=$750(1+0.105)(1+0.075)
FV=$750(1.105)(1.075)
3. Then, the result is:
FV=$890.91
What would be the second year future value?
The answer is: $890.91