Which pair of expressions is equivalent? a. f + g + f + g and 2(f +g) b. 2f + 4g – f – g and 2(f + g) c. 0.5f + g + 1.5f – g and 2(f + g) d. f – g + f + g and 2(f + g)

If angle 2=3x +1 and angle 3=2x +4what is angle 2

Each cookie sells for $0.50 sam spent $90 on baking supplies and each cookie cost $0.25 to make how many cookies does sam need to sell before making a profit formula: sales> cost

Suppose that sahil knows that 45 people with ages of 18 to 29 voted. without using a calculator, he quickly says then 135 people with ages of 30to 49 voted. is he correct? how might sohil have come up with his answer so quickly?