I need help with my basic statistics/ In 2014, the United States exported a total of $376 billion worth of products to Canada. The five largest categories were:

a. What percentage of the United States’ total exports to Canada is represented by the two categories “Machinery" and "Electrical Machinery"?
b. What percentage of the top five exported products do “Machinery" and "Electrical Machinery" represent? (Round your answer to 1 decimal place.)

Astudy group should stay around 3-6 people. true or false

Analyze the forces acting on a cyclist who is slowing down as he or she climbs a hill

Simba travel agency arranges trips for climbing mount kilimanjaro. for each trip, they charge an initial fee of \$100$100 in addition to a constant fee for each vertical meter climbed. for instance, the price for climbing to the shira volcanic cone, which is 30003000 meters above the base of the mountain, is \$400$400. let f(d)f(d) denote the fee of a trip ff (measured in dollars) as a function of the vertical distance climbed dd (measured in meters). write the function's formula. f(d)=