the members of the student council are trying to raise $500 for charity. they paid $150 for decorations and will be able to save $8 from every homecoming ticket they sell. The inequality 8t - 150 ≥ 500 can be used to determine the number of tickets (t) they need to sell to reach their goal. Which statement about the number of tickets they need to sell in order to raise at least $500 is true?

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.

The edge of a cube was found to be 30 cm with a possible error in measurement of 0.4 cm. use differentials to estimate the maximum possible error, relative error, and percentage error in computing the volume of the cube and the surface area of the cube. (round your answers to four decimal places.) (a) the volume of the cube maximum possible error cm3 relative error percentage error % (b) the surface area of the cube maximum possible error cm2 relative error percentage error %

1. if events a and b are non-overlapping events, how do you find the probability that one or the other occurs? 2. what does it mean if p(a or b) equals 1?