Simplify the expression: 2.75j + 2.25 - 1.5j + 3
a) 4.25j + 5.25
b) 1.25j + 5.25
c) 1.25j - 0.75
d) 1.75j - 0.75

Idon’t understand this.. will someone ? will mark brainliest along with 20 points.

Mexico city, mexico, is the world's second largest metropolis and is also one of its fastest-growing cities with a projected growth rate of 3.2% per year. its population in 1991 was 20,899,000 people. use the formula p = 20.899e0.032t to predict its population p in millions with t equal to the number of years after 1991. what is the predicted population to the nearest thousand of mexico city for the year 2010?

Solve the equation -9p - 17 =10 a -3 b. 16 c. 18 d -16