There are a total of 368 sea turtles. The pollution and trash have decreased the population of sea turtles by 12% every year. How many sea turtles will there be in 15 years?

Can somebody me out with this question

Which of the following expressions are equivalent ?

Arefrigeration system at your company uses temperature sensors fixed to read celsius (°c) values, but the system operators in your control room understand only the fahrenheit scale. you have been asked to make a fahrenheit (°f) label for the high temperature alarm, which is set to ring whenever the system temperature rises above –10°c. what fahrenheit value should you write on the label