: If k is Kendra’s present age, write an expression for her age eight years ago. A. k + 8 B. 8 - k C. 8 + k D. k - 8

Avariable that is not being directly tested during an experiment should be changed varied experimented controlled

Aplanet similar to earth has four moons roughly the same distance away. the moon that will most affect tides on the planet is the one that has the greatest a) mass. b) volume. c) density. d) amount of water.

For either problem would be greatly appreciated