Numbers that follow a rule

Now suppose you have 300 eggs, but only 70% of those eggs progress to become a caterpillar, and only 80% of the caterpillar progress to become an adult butterfly. how many butterflies do you have?

Aria drank 500 millimeters of water after her run. Her best friend, Andrea drank 0.75 liter of water. Who drank more

4 - 2 (x + 7) = 3 (x + 5)

A scientist is observing a sample of a radioactive substance. The table below shows the amount of the radioactive substance remaining, in milligrams, with respect to time, in hours, since the scientist began observing the sample.

Write the equation of a line in slope intercept form which has ay-intercept of 7 and a slope of 4.

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.