A student flips a switch, and a light bulb connected to two wires and a battery lights up. Which best describes the type of electrical circuit this demonstrates?

closed circuit

open circuit

parallel circuit

series circuit

What signals you that factoring by grouping is the best method to use when factoring a problem?

How is working backward similar to solving an equation?

The boiling point of water at an elevation of 0 feet is 212 degrees fahrenheit (°f). for every 1,000 feet of increase in elevation, the boiling point of water decreases by about 2°f. which of the following represents this relationship if b is the boiling point of water at an elevation of e thousand feet? a) e = 2b - 212 b) b = 2e - 212 c) e = -2b + 212 d) b = -2e + 212