Write the expression as either the sine, cosine, or tangent of a single angle.

sin 57° cos 13° - cos 57° sin 13°

2/3 x - 9/8 x - 4/5 x - 1

What is 5,562,852,111 rounded to the nearest billions place? A. 5,000,000,000 B. 5,500,000,800 C. 6,000,000,000 D. 6,500,000,000

A researcher interested in the impact of "dress-down Fridays" on work performance decides to study the impact of attire at work. She randomly selects 35 people at a large company to participate.

The number of social media followers of a company is modeled by the equation F (t) = 32500 (0.91) ^t. Is the number of followers increasing or decreasing? Explain.

Write an inequality for the situation. all real numbers at most - 9.5 or at least 5.5 A. - 9.5 ≤ b ≤ 5.5 B. b ≥ - 9.5 or b ≥ 5.5 C. b ≤ - 9.5 or b ≤ 5.5 D. b ≤ - 9.5 or b ≥ 5.5

A newspaper reporter wants to know how popular the hobby of bird watching is in the city. He asked people at the local bird refuge if they watched birds as a hobby. Which of the following best explains whether the reporters data is valid or not?

I am very confused on how to figure out if y = 3/4x is proportional?

Alison wants to buy a mountain bike for $339.12. If she saves $28.26 each month, in how many months will she be able to buy the bike?

At 12 o'clock the temperature was 7°C. The temperature decreased by - 20°C. What is the new temperature?

Ashleys rentals charges $27.50 per hour to rent a surfboard and a wetsuit. Darlas surf shop charges $23.25 per hour to rent a surfboard plus $17 extra for a wetsuit.