Hi i want to ask you something Emma wrote thirty-six thousand, forty-two as 3,642.Explain what she did wrong. Then write the number correctly.

For f(x)=2x+1 and g(x)= x^2 -7, find (f•g)(x)

The diameter of a ball is 8 in. what is the volume of the ball? use 3.14 for pi. enter your answer as a decimal in the box. round only your final answer to the nearest hundredth.

Arestaurant chef made 1 1/2 jars of pasta sauce. each serving of pasta requires 1/2 of a jar of sauce. how many servings of pasta will the chef be able to prepare using the sauce?