Sandy has a total of 35 coins in her money jar is sandy's jar contains only nickels and dimes and the value of all the coins is $2.50, how many nickels does sandy have?

Factor this polynomial completely x^2-64

What effect would doubling all the dimensions of a triangular pyramid have on the volume of the pyramid? explain your reasoning.

Aclothing store has the sign shown in the shop window. pani sees the sign and wants to buy 3 shirts and 2 pairs of jeans. the cost of each shirt before the discount is $12, and the cost of each pair of jeans is $19 before the discount. write and simplify an expression to find the amount pani pays if a $3 discount is applied to her total