Evaluate the expression.
1. 35 - [6 + (42 - 2)]

Which expressions are equivalent to -6 + 3m

What is the solution of sqrt x+2-15=-3

On a string instrument, the length of a string varies inversely as the frequency of its vibrations. an 11-inch string has a frequency of 400 cylces per second. find the frequency of a 10-icnch string.