Simplify the following expressions.

1) (6+6i) - (2+i)

2) (9+4i) (9+4i)

3) (8+i) (2+7i)

One gallon of milk currently costs $3.65. the cost of one gallon of milk is projected to increase by 110% in the next 2 years. what is the projected cost of a gallon of milk in 2 years from now?

It takes Sydney 3/4 of an hour to complete the puzzle. How many puzzles can Sydney finish in 3 hours?

Virenas Scout troop is trying to raise at least $650 this spring. How many boxes of cookies must they sell at $4.50 per box in order to reach their goal?

Hector's family is making 4 pizzas for dinner. They have of a pound of shredded cheese and put an equal amount on each pizza. How many pounds of cheese do they put on each pizza?

In science class, Priscilla heats water and measures the temperature of the water every 2 minutes/or data are shown in the table. Time in mutes 0 2 4 6 8 10 Tempt in C 25 30 35 40 45 50 What was the temperature of the water at 5 minutes? Explain

The following factors are not prime: (x2 - 7x) (7x+21). What remains to be factored? (can be more than one answer). A) Factor out the 7x from the product. B) Factor out an x from the first binomial. C) Factor out a 7 from the second binomial

The length of an engine bolt for a lawnmower is 2.675 centimeters. The length of an engine bolt for another lawnmower is 2.5848 centimeters. What is the difference between the lengths of these two bolts? A. 0.091 centimeters B. 0.0908 centimeters C.

Use a cofunction identity to write an equivalent expression: sin (pi/6 - theta)

A restaurant uses 6 1/2 pounds coffee per day. How many grams the do they use each day?

The vertices of a triangle are A (0, 0), B (3, 8), and C (9, 0). What is the area of this triangle?