3+9n=21

A:-2

B:3

C:2

D:6

Order of fractions from least to greatest 5/8,3/4,1/2,9/16

The mean of 10 positive numbers is 16. when another number is added, the mean becomes 18. Find the number added

Solve f/2 - 9 = 13 for f.

Solve 8 + 5 * = 1008. Round to the nearest ten-thousandth.

How long would it take you to walk 2.4 km at a speed of 1.5 m/s

tom and arif had $245 altogether. after tom spent $20 and arif spent $75, tom had twice as much money as arif. how much money did each have at first

Simplify: (x - 5) (7x2 - 8x - 7)

What's the greatest whole number that rounds to the number 277,300

The population of a city in 2009 was 34,000. By 2014, the city's population had grown to 46,400 people. Assume that the population of the city has grown linearly since 2009 and that it will continue to grow this way.

A label reads: "Gantrisin. 1.5 g in 20 mL. " how many milliliters are needed to give10.5 g of Gantrisin?