If 50% of a number is 70 and 80% of the same number is 112, find 30% of that number. pls i need fast *NO LINKS*

What value of x is in the solution set of 4x – 12 s 16 + 8x?

Find the value of x for which line a is parallel to line b

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?