Sales for a business were 3 million dollars more the second year than the first, and sales for the third year were double the sales for the second year. if sales for the third year were 38 million dollars, what were sales, in millions of dollars, for the first year?
a. 16
b. 17.5
c. 20.5
d. 22
e. 35

As part of an annual fundraiser to raise money for diabetes research, diane joined a bikeathon. the track she biked on was 1,920 yards long. diane biked 38.5 laps. her sponsors agreed to donate an amount of money for each mile she biked. how many miles did she bike? first fill in the blanks on the left side using the ratios shown. then write your answer. given ratios: 5280ft / 1 mi , 1 mi /5280 ft , 1,920 yards / 1 lap , 1 lap / 1,920 yards , 3 ft / 1 yard , 1 yard / 3 ft. blanks: 38.5 laps / 1 yard x (blank) x (blank) x (blank) = (blank) miles i'm really confused on how to do this, and the explanations aren't exactly . if you could walk me through how to do this, it would be greatly appreciated.

The trigonometric ratios sine and secant are reciprocals of each other

Perry observes the opposite parallel walls of a room in how many lines do the plains containing the walls intersect