For f(x) = cos(1 + 2x), what is f '(x)? f '(x) = −2 sin(1 + 2x) f '(x) = −sin(1 + 2x) f '(x) = sin(1 + 2x) f '(x) = 2 sin(1 + 2x)

Can someone show me the steps to solve the problem?

Arestaurant offers a $12 dinner special that has 5 choices for an appetizer, 12 choices for an entrée, and 4 choices for a dessert. how many different meals are available when you select an appetizer, an entrée, and a dessert? a meal can be chosen in nothing ways. (type a whole number.)

4+(2+x) can you me solve this problem