Enter the missing value into the box to complete the ratio comparing 6 yd to 9 ft.

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 20% of a number is 35, what is 50% of that number?

Evaluate the expression for the given value of the variable 2×(c2-5) for c=4