X is inversely proportional to p squrare given that x=50 when p=1 find the value of x when p=7

For one history test, keith had to answer 40 questions. of these 40 questions, keith answered 28 of them correctly. what percent did keith get on his history test? round your answer to the nearest tenth if necessary

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. what distance from city a is the point where the truck and the car will meet?

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