A quelle nombre je pense: La somme de son double et de sept est égale à la différance de son triple et de 6

Which property is illustrated by the following statement? if hxa rgi, then rgi hxa.

An advertising firm has an old computer that can prepare a whole mailing in 6 hours. with the of newer model the job is complete in 2 hours. how long would it take the newer model to do the job alone?

Which of the following is the explicit rule for a geometric sequence defined a recursive formula of a -5a for which the first term is 23?