Ji and layla played a game in which they scored 10 points for a correct answer and lost 20 points for an incorrect answer. ji answered 7 questions correctly and 3 questions incorrectly. layla answered 5 questions correctly and 1 question incorrectly. who had the higher score? by how many points?

The figure above shows the lengths of thesides of a rectangle in cm. find the valuesof x and y and then the area of the rectangle.sides: top= 3x - yleft= 3y + 4bottom= 2x + yright= 2x - 3 use both methods, elimination and substitution, if possible.

(c) the diagram shows the first three shapes of a matchsticks arrangement.first shape = 3second shape = 5third shape = 7given m represents the number of matchstick used to arrange the n'th shape.(i) write a formula to represent the relation between m and n. express m as the subjectof the formula.(ii) 19 matchsticks are used to make the p'th shape. find the value of p.

Write as a product: ac^2–ad+c^3–cd–bc^2+bd