The first five terms of an arithmetic sequence are given below: a) -7, -3, 1, 5, 9… What is term to term rule
b) -7, -3, 1, 5, 9… What is the 7th term in the sequence? write only the number

Use the formulas a = x 2 – y 2, b = 2xy, c = x 2 + y 2 to answer this question. one leg of a right triangle has length 11 and all sides are whole numbers. find the lengths of the other two sides. the other leg = a0 and the hypotenuse = a1