Margaret is saving money for her summer vacation. She calculates that
her starting amount is 0.4% of the total
amount she wants to save. What is
0.4% written as a decimal?
Please explain

Write the equation in logarithmic form 8^x=64

Ireally need subtract and simplify.(-y^2 – 4y - 8) – (-4y^2 – 6y + 3)show your work, ! i will mark you brainliest but you have to show your work.

Ahovercraft takes off from a platform. its height (in meters), xx seconds after takeoff, is modeled by: h(x)=-2x^2+20x+48h(x)=−2x 2 +20x+48 what is the maximum height that the hovercraft will reach?