Carlos has $13 in his bank account and writes a check for $22. After the check has been cashed, what will the bank balance show?

Two customers went to a post office. first customer paid $12 for 14 and 5 envelopes the second paid 24.80 for 10 postcards and 15 envelopes. what is cost of each envelope?

Which system of linear inequalities is represented by the graph?

Complete the solution of the equation. find the value of y when x equals -5. -4x - 8y = -52