Which pair of expressions is equivalent using the associative property of multiplication?
5(3a ⋅ 4) = 15a ⋅ 20

5(3a ⋅ 4) = (3a ⋅ 4) ⋅ 5

5(3a ⋅ 4) = (5 ⋅ 3a) ⋅ 4

5(3a ⋅ 4) = 5 ⋅ 3a ⋅ 4

Nthe opening scene of the movie raiders of the lost ark, indiana jones replaces a golden statue with a bag of sand. the platform on which the statue is placed is designed to detect the mass of the statue. if the bag of sand has a different mass than the statue, then a mechanism triggers and destruction ensues. the density of gold is about 20\text{ g/cm}^320 g/cm 3 20, space, g, slash, c, m, start superscript, 3, end superscript. the density of sand can be estimated at 2.5\text{ g/cm}^32.5 g/cm 3 2, point, 5, space, g, slash, c, m, start superscript, 3, end superscript. the gold statue can be modeled as a cylinder with height 25\text{ cm}25 cm25, space, c, m and radius 8\text{ cm}8 cm8, space, c, m. in terms of \piπpi, what is the mass of sand indiana jones needs to avoid triggering the mechanism?

Using the rise/run counting method, the slope of the line is

Lucy spent $165 in december using a new credit card. in january, she began paying between $15 and $25 each month towards her account balance.