Please can you give the answer of this, 8x+5y=23 -8x+9y=-19

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

Use the data on the dot plot to answer the question.how many people read for more than three hours last week? i'm on a unit test review

What is the best way to answer questions with a x expression in the question. for example 3x + 10x=?