Joe is on his way home in his car. his drive is 20 miles long. he has finished one-fourth of the drive so far. how far has he driven?

Aflute is on sale for 20% off. including the discount and 8% tax, the sales price is $216.

Can someone me and plz do the problem

[15 points]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