If 84 out of 150 students plan to attend the school dance how many students out of 750 would you expect to attend

News cameras take an overhead picture of a crowd at an outdoor event journalist then count the total number of people in the picture and use the sample of estimate the total number of people in the crowd this process is an example of

If g(x) = x+1/ x-2 and h (x) =4 - x , what is the value of ( g*h) (-3)?

What are the solutions for the following system? -2x^2+y=-5 y=-3x^2+5