How do u write 1.7 in expanded form

Write the following as a base and exponent

Florence price's brownies and more sells all types of cookies and pastries. on tuesdays, they markdown all brownies 75% to a sale of $1.50 a dozen. find the selling price and the markdown of a dozen brownies.

If olu is twice as old as funmi if the sum of their ages is 60 how old is olu