Mike has 19 golf balls. fred has 3 times as many. rayhas half as many balls as fred and mike combined. how many golf balls do the 4 friends have combined?

Aaron paid $9.75 for markers that cost $0.75 each. he bought 4 times as many pencils for $0.35 each. how much did aaron pay for pencils?

Daniel buys one bond each with a par value of $1,000 from grath oil, ombor medical supplies, and dwyn horticulture. grath oil bonds are selling at 120.514, ombor medical supplies bonds are selling at 90.773, and dwyn horticulture bonds are selling at 101.180. what is the total face value of daniel's bonds?

For questions 1–3, use the differential equation given by dx equals x times y divided by 3, y > 0.