Changing bases to evaluate logarithms in exercise, use the change-of-base formula and a calculator to evaluate the logarithm. see example 9.
log2 48

Danielle earns a 7.25% commission on everything she sells at the electronics store where she works. she also earns a base salary of $750 per week. what were her sales last week if her total earnings for the week were $1,076.25?

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

Sasha drank 8 bottles of water everyday for a week. how many bottles of water did she drink in total?