We have an expression:
[tex]11r+7s[/tex]It has 2 terms with two unknowns: r and s.
Their coefficients are 11 for r and 7 for s.
Answer:
11r+7s is the expression.
11r and 7s are the terms.
11 and 7 are the coefficients.
r and s are the variables or unknowns.