The Nature Club collected donations to plant flowers around the school. The 7 members of the club collected $20 on Monday and $15 on Tuesday. Each member collected the same amount of money. How much money did each member collect? Choose the answer that shows the correct two steps to solve the problem.

Thompson and thompson is a steel bolts manufacturing company. their current steel bolts have a mean diameter of 127 millimeters, and a variance of 36. if a random sample of 35 steel bolts is selected, what is the probability that the sample mean would differ from the population mean by greater than 0.5 millimeters? round your answer to four decimal places.

Aremote-controlled boat can travel at 4 feet per second in calm water. the boat traveled 48 feet with the current, and then it traveled 16 feet against the current in the same amount of time. how fast is the current?

Find the length of the normal and the angle it makes with the positive x-axis. (see pictured below)