Answer:
Coefficient: -13, -5
Constant: 15, -128
Variables: n
Number of terms: 4
Explanation:
A variable is a symbol (usually a letter) to represent a mathematical object. Here, that is n.
A constant, in this case, is a number not being multiplied or divided by a variable. No matter the value of the variable, this number will stay constant on its own. Here that is 15 and -128.
A coefficient is the number being multiplied by a variable. Here, that is -13 and -5.
A term is a number, variable, or any combination of numbers and variables being multiplied together. Here, we have four terms. They are (1) -13n, (2) 15, (3) -5n, (4) -128n.