PLS HELP
solve for y to the nearest meter
and solve d to the nearest degree

What is the point of inflection for the function f(x)=2cos4x on the interval (0, pi/2)

Afactory buys 10% of its components from suppliers b and the rest from supplier c. it is known that 6% of the components it buys are faulty. of the components brought from suppliers a,9% are faulty and of the components bought from suppliers b, 3% are faulty. find the percentage of components bought from supplier c that are faulty.

Plzzz answer both questions and i will give you 100 points