David has x nickels and y dimes. He has at least 24 coins worth at most $1.80 combined. Solve this system of inequalities graphically and determine one
possible solution.

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 square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base

From the beginning of the day the temperature rose 15 degrees so that by 4 pm it was 87 degrees. what was the temperature at the start of the day