Peyton has n nickels and d dimes. She has no less than 21 coins altogether. Write this situation as an inequality.

Bocephus has a bag full of nickels and dimes. if there are 3 times as many dimes as nickels, and he has $\$36.05$ in his bag, how many nickels does he have?

How much would it be worth in 5, 10, 20 years

The base of a solid right pyramid is a square with an edge length of n units. the height of the pyramid is n - 1 units. sia (n-1 n