How to find the probability that cards are different values?

Can someone me my sister? she is in third grade. 50 points and brainlist! ones that are not answered. plz and thx!

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

Who long does it take to drive 150 miles at 45 miles per hour