How to solve exponent problems

If tanisha has $100 to invest at 8% annum compounded monthly, how long will it be before she has $150?

7846745 times 150 divide by one quarter of 7846845

What is 10^6 equals?

Identify the zeros of the polynomial function N (x) = 1/2 (x-1) (x+3)

Write 7.75 x 10^-3 in standard notation

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.