How many ways can the letters in the word laughter be arranged if the g must be followed by the h?

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)

Lena reflected this figure across the x-axis. she writes the vertices of the image as a'(−2, 8), b'(−5, 6), c'(−8, 8), d'(−4, 2).

Pepe and leo deposits money into their savings account at the end of the month the table shows the account balances. if there pattern of savings continue and neither earns interest nor withdraw any of the money , how will the balance compare after a very long time ?