please help please

How do businesses a country's economy? a. by investing in goods and services b. by increasing the unemployment rate c. by making profits

Graph the line that represents a proportional relationship between d and t with the property that an increase of 33 units in t corresponds to an increase of 44 units in d. what is the unit rate of change of dd with respect to t? (that is, a change of 11 unit in t will correspond to a change of how many units in d? )

For a function f(x), a) if f(7) = 22 then f^-1(22) = b) f^-1(f(c)) =