Which expression is equivalent to 2a + 2a?

4a

2a2

4 + 2a

4a2

Carl is boarding a plane. He has 222 checked bags of equal weight and a backpack that weighs 4kg. The total weight of Carl's baggage is 35kg

What is the quotient of (x3 + 6x2 + 11x + 6) : (x2 + 4x + 3)

A state lottery involves the random selection of six different numbers between 1 and 27. If you select one six number combination, what is the probability that it will be the winning combination?

Is x greater than less than, or equal to 100 degrees?

What is the slope of th line 7x-9y=63

Merideth has a set of ninety 1-inch tiles. If she starts with one tile, then surrounds it with a ring of tile to create a larger square, how many surrounding rings can she make before she runs out of tiles?

five whole numbers are written in order (4, 6, x, y, 10). The mean and median of the five numbers are the same. Work out the values of x and y.

What figures can be drawn in a circle with 2 perpendicular diameters?

Outside temperature over a day can be modeled as a sinusoidal function. Suppose you know the temperature varies between 67 and 83 degrees during the day and the average daily temperature first occurs at 8 AM.

What is decimal expansion?