Caleb spends 7 1 ​ of his pocket money on his bus card and 2 1 ​ on music streaming. What fraction of his pocket money does he have left?

Use the squared identities to simplify sin^2x cos^2x

The deepest part of the swimming pool is 12 feet deep. the shallowest part of the pool is 3 feet deep. what is the ratio of the deeply of the deepest part of the pool to depth of the shallowest part of a pool?

If f(x)=3 over x+2 - square root x-3 then f(7)=