Which expression is equivalent to 1/2 (6x + 1/2)

Write the fraction or mixed number and the decimal shown by the model

Tommy buys a sweater that is on sale for 40% off the original price. the expression p -0.4p can be used to find the sale price of the sweater, where p is the original price of the sweater. if the original price of the sweater is 50, what is the sale price?

If f(x) = 4x - 3 and g(x) = x + 4, find (f - g) (x)