Si se da una función de costes y una función de ingresos ¿como se determina la función de beneficios?

Question: what is the value of x 4x-2= (-7) +5x. it would be greatly appreciated if someone could actually explain to me step by step

For the rule of 78, for a 12-month period, the last term in the sequence is 12 and the series sums to 78. for an 10 month period, the last term is and the series sum is . for a 15 month period, the last term is and the series sum is . for a 20 month period, the last term is and the series sum is

We have 339 ounces of jam to be divided up equally for 12 people how muny ounces will each person get