Astudent sayd that the slope of the line for the equation y=20-15x is 20 and the y intercept is 15. find and correct the error

Is this a polynomial function? i need to know asap

The sides of a parallelogram are 24cm and 16cm. the distance between the 24cm sides is 8 cm. find the distance between the 16cm sides

Asequence has a common ratio of and f(5) = 81. which explicit formula represents the sequence? f(x) = 24 f(x) = 16 f(x) = 24 f(x) = 16