10 points + brainliest the parabola with the equation y = ax^2 + bx + c, where a, b, and c are constants, is graphed on the xy-plane. if the parabola passes through the point (-1, -1), which of the following must be true? a. a - b + c = -1 b. a - b - c = -1 c. a + b = 1 d. b - c = -1

Tom is the deli manager at a grocery store. he needs to schedule employee to staff the deli department for no more that 260 person-hours per week. tom has one part-time employee who works 20 person-hours per week. each full-time employee works 40 person-hours per week. write and inequality to determine n, the number of full-time employees tom may schedule, so that his employees work on more than 260 person-hours per week. graph the solution set to this inequality.

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.

Use the given information to determine the exact trigonometric value.