I need help figuring out which two grids have the same % please

How many different ways can you make change for $.50 using only nickels,dimes, and quarters?

Which expression is equivalent to 3^3 + 2^2?

(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.