Atypewriter types 840 words in 2.4 hours. working at the same rate, how many words will he type in 3.6 hours?

2÷6+1/2 to the second power plus one

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.

Write the expression as a single natural logarithm. 2 in a - 4 in y