To prepare a coffee, you will put 15 grams of coffee and 175 grams of hot water. Calculate the percentage of coffee concentration.

Para preparar un café, pondrás 15 gramos de café y 175 gramos de agua caliente.
Calcula el porcentaje de concentración de café

Which is the graph of the following inequality?

Larger pets need to be transported in larger portable kennels. using a graphing calculator and the relationship between the width, length, and height, find the dimensions of a portable kennel whose volume is 7.4 ft3. the dimensions of a portable kennel can be expressed as width x, length x + 0.4, and height x − 0.2? what are the dimensions of a portable kennel with a volume of 7.4 ft3? use a graphing calculator to solve. round the dimensions to the nearest tenth.

Ihave like no idea how to do any of this !