The simple interest on a loan of $10405
over 6 years is $1872.90. Find the interest rate.

Really need on these. i have no idea what to do

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?

Jimmy can run 3.5 miles in 20 minutes. how far can ne run in one hour and ten minutes?