Stephanie has $152 in the bank she withdraws $20 then she deposits $84 write an addition expression to represent this situation then find the sum and explain its meaning

Element x decays radioactively with a half life of 8 minutes. if there are 450 grams of element x, how long, to the nearest tenth of a minute, would it take the element to decay to 37 grams?

Abig remake 100 loaves of bread in one day how many loaves does the bakery make in 6 days

Ben is three times as old as samantha, who is two years older than half of michel's age. if michel is 12. how old is ben?