[IMAGE] i need help with 1-4 pls help ASAP

Which of the following is the true for f(x) = 5cos

What is the length and width of a 84.5 square foot rug? will mark

Match the vocabulary to the proper definition. in probability, two events in which 1. conditional probability the outcome of one event is independent of the outcome of a second event. 2. dependent events in probability, two events in which the outcome of one event is dependent on the outcome of a second event. the probability of an event in which the outcome of the event is conditional on the outcome of one or more different events. 3. independent events