PLEASE HELP ME SIMPLIFY THIS PLEASE SHOW WORK TO! THANK YOU 7x - 4x + 3

Kyle and elijah are planning a road trip to california. their car travels 3/4 of a mile per min. if they did not stop driving, how many miles could kyle and elijah drove in a whole day? ? 1 day = 24 hours. plzzz write a proportion i will give you 100 points

Let f(x) = 5/x and g(x)=2x2+5x. what two numbers are not in the domain of f o g

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