Which rational expression is undefined when x = 0? 5x² – 4
3x-3
6x2
9x - 3
8x + 6
- x²+1
4X-8
- 2x²

A. 90 degrees b. 45 degrees c. 30 degrees d. 120 degrees

Janie has $3. she earns $1.20 for each chore she does and can do fractions of chores. she wants to earn enough money to buy a cd for $13.50. write an inequality to determine the number of chores, c, janie could do to have enough money to buy the cd.

Solve the equation using the zero-product property. -3n(7n - 5) = 0 a. 0, -5/7 b. -1/3, -5/7 c. -1/3, 5/7 d. 0, 5/7