Please help me anyone??? ​

The system of equations graphed below has how many solutions?

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

What is the value of the expression i 0 × i 1 × i 2 × i 3 × i 4? 1 –1 i –i