The density of a certain material is such that it weighs 4 kilograms for every 9 cups of volume. Express this density in ounces per gallon

Solve this equation using substitution. {4x + y = −2} {4x + 6y = 44}

Acompany that manufactures and sells guitars made changes in their product range. from the start they had 20 models. then they reduced the number of models to 15. as a result, the company enjoyed a 10% increase in turnover. - how much did the stock level change? in (%)

Choose the linear inequality that describes the graph. the gray area represents the shaded region. a: y ≤ –4x – 2 b: y > –4x – 2 c: y ≥ –4x – 2 d: y < 4x – 2