At the beginning of the 7th grade, Martin was 50 inches tall. At the beginning of his 8th grade year, Martin was 58 inches tall. What was his percent of change from his 7th grade year to his 8th grade year? (sorry I forgot to add the answer choices) Anyways here they are- A-13%
B- 14%
C- 16%
D- 18%

8000 + 8800 + 8000 + 8 million + 80 trillion + another a katrillion equals

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.

To which sets of numbers does -12 belong? choose all answers that are correct. a) natural numbers b) integers c) real numbers d) irrational numbers