Simplify the following expression into the form a + bi, where a and b are rational numbers. -2i(7-4i)+(3++2i)

The simplified value of the given expression is -16-10i.

Step-by-step explanation:

The given expression is

We need to convert the expression into the form a + bi, where a and b are rational numbers.

Using distributive property we get

Combine like terms.

Substitute ,

Combine like terms.

Therefore the simplified value of the given expression is -16-10i.

mr. flanders’ class sold 47 doughnuts and   mr. rodriquez’s class sold 38 cartons of milk

step-by-step explanation:

let x be the number of doughnuts sold by mr. flanders’ class and y be the number of cartons sold by mr. rodriquez’s class.

1. together, the classes sold 85 items, then

x+y=85.

2. both classes earn earned $104.49 for their school. if doughnuts were sold for $1.35 each, then x doughnuts costed $1.35x. if cartons of milk were sold for $1.08 each, then y cartons costed $1.08y. hence,

1.35x+1.08y=104.49.

3. solve the system of two equations: