Which of the following demonstrates the commutative property across multiplication for 2× 10 × 7

a. 10 ×7 × 2
b. 2 × (10 × 7)
c. (2 × 10) × 7
d. 2 + 10 × 7

Follow these steps using the algebra tiles to solve the equation −5x + (−2) = −2x + 4. 1. add 5 positive x-tiles to both sides and create zero pairs. 2. add 4 negative unit tiles to both sides and create zero pairs. 3. divide the unit tiles evenly among the x-tiles. x =

The height of a flare fired from the deck of a ship in distress can be modeled by h(t)= -2(8t^2-52t-28), where h is the height of the flare above water and t is the time in seconds. a. find the time it takes the flare to hit the water.

What is the lcm of 16 and 40 ? 24 and 40 ?