2) lisa is ordering sand from the internet, on one site she found sand on sale for
$2.25 per pound, and on the second site she found 5kg of sand on sale for $14.
which is a better deal?

i dont know

step-by-step explanation:

umm. i dont know

take the logarithm of both sides (the base of the log doesn't matter):

apply the exponent property - this says that :

distribute the log terms on both sides:

group like terms together:

divide through both sides by the coefficient on :

you can do some additional rewriting here using the properties of the logarithm to simplify things if you like: