Suppose $7000 is invested at 6% simple interest. If $840 in interest is earned, how long was the money invested? vars

How can you decide witch operations to use to slice a two step equation

At $1.32 million, they closed last month percent above what they paid in 2007." how much did they pay in 2007?

At the county fair, the baxter family bought 6 hot dogs and 4 juice drinks for $12.90. the farley family bought 3 hot dogs and 4 juice drinks for $8.55. find the price of a hot dog and the price of a juice drink.