Mr james plant 3 seeds per square foot how many total seeds does she needs to plant in her garden​

Combined megan and kelly worked 60 hours. kelly worked twice as many hours as megan. how many hours did they each worked?

Solve - pv + 40 < 65 for v solve 7w - 3r = 15 for r

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