Formula for addition

A recent poll at Smithfield high school shows that 65% of seniors say that they have copied another student's homework and 25% of them have left school without permission from the office.

Which expression is equivalent to x + 1 - x + 2x + x + 1? A) 3x B) 3x + 1 C) 3x + 2 D) 4x + 1

The volume of a triangular prism is increased by a factor of 8. By what factor is the surface area of the figure increased? O2 O4 O 16 O 24

What is the value of the underlined digit 45769331 six is the underlined number

What is "a number that is at least 90"

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.