Negative one times the sum of twice a number and 3 is equal to two times the difference of -4 times the number and 3. what is the number?

When only separate discreet points are graphed it is called?

Can someone me with this problem i don't understand i need

In a young single person's monthly budget, $150 is spent on food, $175 is spent on housing, and $175 is spend on other items. suppose you drew a circle graph to represent this information, what percent of the graph represents housing?