5 (z + 6) - 2 = 9z I need to know the steps

A market researcher selected 200 people at random from a group of people who indicated that they liked a certain book. The 200 people were shown a movie based on the book and then asked whether they liked or disliked the movie.

Simplify the expression: cos^2 (pi-x) / sqrt1-sin^2 (x) A. Tan (x) B. Cos (x) tan (x) C. Cos (x) cot (x) D. Sin (x) tan (x)

15 is what percent of 5

Jace is placing a carpet in his square shaped room. Room measures 144ft squared what is the perimeter of the living room

Mathnificent is a math tutoring service. The first year it was open, it had 6 students. If 4 new students enroll each year, which of the following equations represents how many students will be enrolled in x years?

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.