Solve each system of equations by substituti
1. y = x + 8
x + y = 2

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 =

Find the maximum value of p= 4x + 5y subject to the following constraints :

Which equation can be used to measure the density of water in a spherical water tank? let w represent the number of water particles within the region.