Help? i'll mark brainliest if correct

Evaluate 8j -k+148j−k+14 when j=0.25j=0.25 and k=1k=1.

Create a graph for the demand for starfish using the following data table: quantity/price of starfish quantity (x axis) of starfish in dozens price (y axis) of starfish per dozen 0 8 2 6 3 5 5 2 7 1 9 0 is the relationship between the price of starfish and the quantity demanded inverse or direct? why? how many dozens of starfish are demanded at a price of five? calculate the slope of the line between the prices of 6 (quantity of 2) and 1 (quantity of 7) per dozen. describe the line when there is a direct relationship between price and quantity.

Gabrielle's age is two times mikhail's age. the sum of their ages is 84. what is mikhail's age?