Lena skied downhill at a steady speed on a 3-mile slope. She reached the bottom of the slope 1/4 hour. Lena wants to know her speed in miles per hour.
Which fraction represents Lena's speed in miles per hour?

3/1/4 (3 over 1/4)
What is Lena's speed in miles per hour?
3/1/4 =

What are the soultion(s) to the quadratic equation 40- x^2=0

Imogene invested $8,000 in a bank account that pays 8 percent simple interest at the end of each year. her friend invested the same amount in stocks where the growth of the investment is represented as 2,000 times the square root of 2 less than the time lapsed in years. if y1 and y2 represent the amount earned in dollars and t is the time lapsed in years, which system of equations correctly represents the situation?

Tom drove 206 miles in 3.9 hours. estimate his average speed.