Cort

An artist makes a profit of (500p - p^2) dollars from selling p paintings. What is the fewest number of paintings the artist can sell to make a profit of at least $60,000? Don't know how to even set it up

Express the infinite series below using sigma notation and then find the sum. 64 + 40 + 25 + 15.625... Any explanation would be excellent. Thank you so much.

Jim begins a job with a starting salary of 27000 dollars. she is guaranteed a raise of 4.75% each year. Sarah also starts a job with a salary of 27000 dollars, she is guaranteed a raise of 1500 dollars each year. What will be Jim's salary after five years