Final answer:
The expression cannot be evaluated without the specific function values f(-9) and g(6).
Step-by-step explanation:
The expression −1⋅f(−9)+7⋅g(6) involves two functions, f and g, evaluated at specific points and then multiplied by coefficients. However, to evaluate this expression, the values of f(−9) and g(6) are required. Without knowing these function values, we cannot provide a numerical answer to this problem. It's important in mathematics to ensure that all variables and functions are defined before attempting to solve an equation or expression.