I WILL GIVE BRAINLIEST I SWEAR

Evaluate cos2θ for cosθ = square root of 3/2

If the tip varies directly with the number of guest which equation represents between the tip, t, and the number of guest, g?

At a pizza shop 70% of the customers order a pizza 25% of the customers order a salad and 15% of the customers order both a pizza and a salad if s customer is chosen at random what is the probability that he or she orders either a pizza or a salad