X+7=8 solve this one step equations

Rumor of the cancellation of final exams began to spread one day on a college campus with a population of 80 thousand students. Suppose that one thousand students initially heard the rumor via a text message.

The necklace charm shown has two parts, each shaped like a trapezoid with identical dimensions. What is the total area, in square millimeters, of the charm? Enter your answer in the box. mm² The figure is two identical trapezoids which share a base.

What is 12.345 rounded to the nearest tenth

Yasmine bought 6 gallons of apple juice. After filling of 4 bottles of the same size with apple juice, she had 0.3 gallon of apple juice left. How many gallons of apple juice are in each container?

If the volume of sand is increasing at a constant rate, is the height increasing at a constant rate? Explain.

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.