If for all real x we assume f(g(x)) = x and f'(x)= 1 + [f(x)]^2 then g'(0) is equal to?

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?

Look at the chart showing the results of a baseball player at bat. which is the probability of getting a hit?

Which is the best estimate of the product of 0.9 x 0.88? 0 0.25 0.5 1