Solve the system by the substitution method. x + 3y = 1 y = - 2x - 17 Select the correct choice below and fill in any answer boxe A. The solution is (-10,3). (Type an ordered pair.) OB. There are infinitely many solutions O c. There is no solution.​

Use the distributive law to multiply. 3(4x + 5y + 6)

(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.

Which number line correctly shows 0.8 + 0.3?