Answer:
The translation of a phrase into a variable expression is given by:
b+7
Step-by-step explanation:
The letter ' b ' is used to name the variable.
The total number of slices of bread used for the sandwiches and the 7 still left in the loaf.
Let b be the total number of slices that were used for the sandwiches.
and also 7 are still left in the loaf
The total number of slices of bread= Number of slices used fro sandwich+Left over
Hence, the expression is:
b+7
