Jon earned 38,000 last year. he paid 6,840 for entertainment. what percent of his earnings did jon pay in entertainment expenses?

Valentina is subtracting from . she finds the lcd to be 15y2. what is valentina's next step?

Find the least common multiple of the expressions: 1. 3x^2, 6x - 18 2. 5x, 5x(x +2) 3. x^2 - 9, x + 3 4. x^2 - 3x - 10, x + 2 explain if possible

Math i have no idea how to do a and b