Determine a equação reduzida de uma circunferência cujo centro é na origem e o raio é igual a raiz quadrada de 7 .

The number of branches on a tree demonstrates the fibonacci sequence. how many branches would there be on the next two levels of this tree? 13 | | | m branches

Which graph represents the parent function of y=(x+2)(x-2)

When george started his current job, his employer told him that at the end of the first year, he would receive two vacation days. after each year worked, his number of vacation days will double up to five work weeks (25days) of payed vacation. how many vacation days will he have in 4 years