De la siguiente función, determinar: Escribe todo el procedimiento A) Si existe un máximo o mínimo
B) Intervalos donde la función es creciente o decreciente
C) Concavidad de la grafica
D) Punto de inflexión

y =x3 - 3x + 3

Can someone me with this problem i don't understand i need

Acampus club held a bake sale as a fund raiser, selling coffee, muffins, and bacon and eggs sandwiches. the club members charged $1 for a cup of coffee, 3$ for a muffin , and $4 for a back. and egg sandwich. they sold a total of 55 items , easing $119. of the club members sold 5 more muffins than cups of coffee, how many bacon and egg sandwiches he’s did they sell

If mary had 320 toy cars and she gave her friend 50 cars and then she gave her brother 72 more cars how much toy cars would mary have left ● explain with proper details