Can I get help on these “Fill in the blanks”

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?

Which of the following is closest to 32.9 x 7.5? a: 232 b: 259 c: 220 d: 265

What else equals 42 and 30 for multiply