Jeremy plays basketball for the varsity team. last season, he scored a total of 1489 points consisting of 2-point and 3-point baskets. if jeremy made a total of 640 baskets, how many of the baskets counted?

Asap! i'm not good math and i'm lost.

Can you me find the missing length. i attached an image.

Each person in an it department of 25 people works on at least one of 3 major projects: system security, program implementation, platform development. 10 people work on system security, 13 work on program implementation, and 12 work on platform development. 4 people work on system security and platform development, 5 people work on program implementation and platform development, and 2 people work on all three projects. how many people work on system security and program implementation?