One family spent $2,000 to start an online business selling goods. they now make $1,240,000 each year. if they made a one-time investment of half of their yearly earnings in a savings account earning 4% simple interest, how much would the account have in it at the end of 5 years

Jamie is hiking up a small mountain. he climbs up at a constant rate of 300 feet/hour until he reaches the peak at 1,500 feet. after that, he hikes down at the same rate to the base of the mountain. the equation that models jamie’s elevation, e, after t hours is e = . jamie’s elevation will be 600 feet after hours and after hours.

This is different from the first one can someone me

What is the best way to answer questions with a x expression in the question. for example 3x + 10x=?