when two musical notes are a "fourth" apart, the frequency of the lower note is 3/4 the frequencyof the higher note. using f as the frequency of the higher note, write an expression for the frequency of the lower note.

The volume of gas a balloon can hold varies directly as the cube of its radius. imagine a balloon with a radius of 3 inches can hold 81 cubic inches of gas. how many cubic inches of gas must be released to reduce the radius down to 2 inches?

Find the value of the variable and the length of each chord for #5 and #6.

Tobias gold sells computers at the office center he's guaranteed a minimum salary of $1,959 per month plus 6.3% commission on total sales how much in total sales is he