Which number below equals 129000: 1.24 x 10ˆ4 1.29 x 10ˆ5 12.9 x 10ˆ5 1.29 x 10ˆ-5

Sorry guys but as you have a small brain

How do i do this activity, is appreciated

The swimming pool is open when the high temperature is higher than 20∘c. lainey tried to swim on monday and thursday (which was 33 days later). the pool was open on monday, but it was closed on thursday. the high temperature was 30 ∘c on monday, but decreased at a constant rate in the next 33 days. write an inequality to determine the rate of temperature decrease in degrees celsius per day, d, from monday to thursday.