light from the sun travels to he earth at a speed of 1.86x10^5 miles/second. how much time will it take to cover a distance of 9.2x10^7 miles? write your answer in scientific notation and round so the first factor goes to the hundredths place

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? )