Convert from spherical to rectangular coordinates. (Use symbolic notation and fractions where needed. Give your answer as a point's coordinates in the form (*, *, *) (3,0, 4) - (.66756,0,2.92478)

The Gross Domestic Product (GDP) of a country in the first quarter of 2014 was $1.2165 × 10°. Rewrite the GDP in standard notation. In this question, you can enter commas or not - Mobius will accept both answers.

Explain to someone who missed class how you would write (3 – 5i) (–2+4i) in the form a+bi where a and b are real numbers.

-2 (42) 1. Simplify: 28 Answer: 2. Simplify and write the answer in scientific notation: (3 x 104) (8 x 10°) Answer:

7. Find the following quotient. Write the answer in the standard form. Do not use the trig form. HINT: Use the complex 4- 7i conjugates: -2 - 9i

2.) A hot air balloon leaves the ground and rises to an elevation of 1,100 feet. During the next 30 minutes, it descends 500 feet, rises 950 feet, descends 375 feet, and finally passes over a school. What is the elevation of the balloon when it passes over the school?