Assuming all variables used have already been declared, after the following program statements execute,

guests $=15$

feePerGuest $=20$

reservationNumber $="3432"$

totalFee $=$ guests ${?}^{**}$ feePerGuest $+50$

$$ any of the variables could be used to perform arithmetic operations

$$ guests, feePerGuest, and reservationNumber all hold numeric data

guests, feePerGuest, and totalFee all hold numeric data

$$ reservationNumber and totalFee hold string data