Does anyone know how to do this ?

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

Which of the following expressions is equal to 2x^2+8

Gregory draws a scale drawing of his room. the scale that he uses is 1 cm : 4 ft. on his drawing, the room is 3 centimeters long. which equation can be used to find the actual length of gregory's room?