Let x and y be directly related. If x is 18 when y is 6, find y when x is 21.​

The sixth grade art students are making a mosaic using tiles in the shape of right triangles.each tile has leg measures of 3 centimeters and 5 centimeters.i f there are 200 tiles in the mosaic what is the area of the mosaic.

Which recursive formula can be used to determine the total amount of money earned in any year based on the amount earned in the previous year? f(n+1)=f(n)+5

Which of the following is the explicit rule for a geometric sequence defined a recursive formula of a -5a for which the first term is 23?