Iam stuck on # 4 #5 don’t know what to start please help.

What is the length of the missing leg in this right triangle? 18 mm 24 mm 26 mm 32 mm

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

Describe how to determine the average rate of change between x = 4 and x = 6 for the function f(x) = 2x^3 + 4. include the average rate of change in your answer.