Question 165976
I am assuming that TI is Texas Instruments calculator.  
If you are using the calculator you can type -6.113[STO]x and -1.104[STO][alpha] 1
then just type in the expression into your calculator and you will get -7.56628
remember 
.0 tenths place
.00 hundredths place
.000 thousandths place

Since we are rounding to the hundredths place the answer is: {{{-7.57}}}