If the following is a polynomial function, then state its degree and leading coefficient. if it is not, then state this fact. f(x) = -13x^5 - 4x^4 - 1

i don't think i ever properly learned to solve it would be great.

Which ordered pair (c,d) is a solution to the given system of linear equations- c+2d=13 -9c-4d=-15

Thales was an ancient philosopher familiar with similar triangles. one story about him says that he found the height of a pyramid by measuring its shadow and his own shadow at the same time. if the person is 5-ft tall, what is the height of the pyramid in the drawing?

Which number completes the inequality? 2/3 < _ < 7/9