2x - 3y = -2 what is the slope and y-intercept and also x + 2y = 1 what is the slope and y-intercept just those 2

The? half-life of a radioactive substance is 20 years. if you start with some amount of this? substance, what fraction will remain in 120 ? years

You are saving to buy a bicycle; so far you save 55.00. the bicycle costs 199.00. you earn 9.00 per hour at your job. which inequality represents the possible number of h hours you need to work to buy the bicycle?

Can you divide 25 into 4 equal groups? explain why or why not.