Can you show me step by step how to find x

Jose predicted that he would sell 48 umbrellas. he actually sold 72 umbrellas. what are the values of a and b in the table below? round to the nearest tenth if necessary

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)

What is the unit rate of, 75% high fiber chimp food to 25% high protein chimp food.