The relation (8,5), (x, 4), (3, 3), and (2, 2) is a function. Which could be the value of x?
A. 8
B. 4
C. 3
D. 2

(note i put the graph in so plz )the graph shows the amount of water that remains in a barrel after it begins to leak. the variable x represents the number of days that have passed since the barrel was filled, and y represents the number of gallons of water that remain in the barrel. what is the slope of the line

Josephine has a great garden with and area of 2x2 + x - 6 square feet

What is the simplified form of (3.25x10^3)(7.8x10^6) written in scientific notation?