susan sold half of her comic books and then bought 8 more she now has 13. how many did she begin with

Alana has 12.5 cups of flour with which she is baking four loaves of raisin bread and one large pretzel. the pretzel requires 2.5 cups of flour to make. how much flour is in each loaf of raisin bread? explain the steps to follow to get the answer.

When x = 3 and y = 5, by how much does the value of 3x2 – 2y exceed the value of 2x2 – 3y ?

Mis the midpoint of rq if rm equals 2x + 5 and mq equals 4x - 9 what is the length of rq