Find the length of the segment indicated to both problems, Round your answer to the nearest 10th if necessary, Please help I really need help! Don't just do it for points please

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?

You receive 15% of the profit from a car wash how much money do you receive from a profit of 300

Select the correct answer from each drop-down menu. a system of equations and its solution are given below. system a complete the sentences to explain what steps were followed to obtain the system of equations below. system b to get system b, the equation in system a was replaced by the sum of that equation and times the equation. the solution to system b the same as the solution to system a.]