13) Doctors noticed that for a patient with high fever function T(x)=0.52x² -3.39x +43 gives body temperature in Celsius x hours after taking Mayenol. Here 0 ≤ x ≤ 7 . A) When will the body temperature be minimal? B) What is the minimal body temperature?

Sarah took the advertising department from her company on a round trip to meet with a potential client. including sarah a total of 11 people took the trip. she was able to purchase coach tickets for $280 and first class tickets for $1280. she used her total budget for airfare for the trip, which was $6080. how many first class tickets did she buy? how many coach tickets did she buy?

Anew landowner is interested in constructing a fence around the perimeter of her property. her property is 1,080√30 feet wide and 500√20 feet long. what is the perimeter of the property? (recall that the perimeter is the sum of each side of a shape or boundary). a 1,580√40 feet b. 5,320√5 feet c. 3,160√20 feet d. 10,640√5 feet

What is the absolute value of the complex number -4- 2 v14 3.15 14 18