When the price level changes, which of the following variables will change and thereby cause a change in the aggregate quantity of goods and services demanded?
a. the real value of wealth
b. the interest rate
c. the value of currency in the market for foreign exchange
d. all of the above are correct.

Needs to schedule the staffing of the center. it is open from 8am until midnight. larry has monitored the usage of the center at various times of the day and determined that the following number of computer consultants are required: time of dayminimum number of consultants required to be on duty8 am-noon4noon-4 pm84pm-8pm108pm-midnight6 two types of computer consultants can be hired: full-time and part-time. the full- time consultants work for eight consecutive hours in any of the shifts: morning (8am- 4pm), afternoon (noon-8pm) and evening (4pm-midnight). full-time consultants are paid $14 per hour. part-time consultants can be hired to work any of the four shifts listed in the table. part-time consultants are paid $12 per hour. an additional requirement is that during every time period, there must be at least two full-time consultants on duty for every part-time consultant on duty. larry would like to determine how many full-time and part-time consultants should work each shift to meet the above requirements at the minimum possible cost. formulate this as an lp problem. you must define your variables clearly

The hartman family is saving $400 monthly for ronald's college education. the family anticipates they will need to contribute $20,000 towards his first year of college, which is in 4 years .which best explain s whether the family will have enough money in 4 years ?

Differentiate between the trait, behavioral, and results-based performance appraisal systems, providing an example where each would be most applicable.