What is the value of the expression 8-(7-4) +12x2

If f(x)=2x-6 and g(x)=3x+9, find (f-g)(x)

Ifurniture stores having a weekend sale and is offering 20% discount on patio chairs and table the sales tax on furniture is 6.25 using function composition how can you represent the total amount a that you would need to pay for this furniture that cost x dollars

What is the difference between the predicted value and the actual value