What value of n makes the expression, x^2+7x+n a perfect square trinomial? a. 7 b. 49/4 c. 49 d. 49/2

What is the y-intercept of the line given by the equation

20.ju inces. which ordered pair is a viable solution if x represents the number of books he orders and y represents the total weight of the books, in ounces? (-3,-18) (-0.5, -3) (0,0) (0.5, 3)

Huong is organizing paperback and hardback books for her club's used book sale. the number of paperbacks is 12 less than three times the number of hardbacks. huong had 162 paperbacks. how many hardback books were there?