Joseph has 213 coins in a jar. All the coins are dimes and quarters.
The value of the coins is $42.15.
How many does he have of each?

For f(x) = 3x+1 and g(x) = x2 - 6, find (g/f)(x)

The? half-life of a radioactive substance is 20 years. if you start with some amount of this? substance, what fraction will remain in 120 ? years

You buy five cds at a sale for $5.95 each. write an expression for the total cost of the cds.then use the distributive property and mental math to evaluate the expression.