How do i find the derivative of

Charles is saving $5 each week. He earns an extra $15 by mowing his neighbors lawn. How many weeks does he need to save in order to get $75

A standard set of dominoes contains 28 tiles, with each tile having two sides of dots from 0 to 6. if these tiles, 7 have the same number of dots on each side.

808 is 1/10 of 8,080 true or false?

If T (n) = 4+3n, what is the 2nd term

How many millimeters are there in 5 centimeters?

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.