42 is what percent of 840

In a stock market game, Sergio bought 150 shares of stock at a price of 5/8 a game dollar per share. How much game money did 150 shares cost?

Evaluate the expression when m=6 and n=33. n-4m

The mass of a an atom of helium is 6.65 x 10^-24. Use scientific notation to express the mass of 250 helium atoms. A) 1.6625 x 10-21 B) 1.6625 x 10-22 C) 1.6625 x 10-24 D) 1.6625 x 10-26

A principal conducts a study to find the average age of all math teachers in a given high school by recording all their ages. What type of study is this?

A shipping company uses large crates to ship certain items. the volume of the crate is 72 cubic feet. What is the height, in feet, of the crate?

Jerome bought 10 packets of drink mix. There were 25 packets of mix in each carton. He used 246 packets for a party. How many packets of drink mix did he have left?

Rihanna says she can draw different functions that have the same x-intercepts and the same domain and range. Her teammates say, "No that's impossible." But she insists, "We just need to sketch some graphs." 1. x-int.

David drove 232 miles in 4 hours and 319 miles in 5.5 hours what is the constant rate of change

Anna has a total of 40 goldfish in her aquarium, some are orange and some are black. The number of orange goldfish is 5 more than twice the number of black goldfish.

Ernie deposited $4000 between two savings accounts. One account paid 4% simple interest and the other paid 2%. At the end of one year, Ernie had earned $140 in interest for both accounts.