CPhill

1L = 4.226753 cups

4L = 16.907012 cups

So

28 - 16.907012  = 11.092988  more cups  = 11 more cups   [ rounded ]

y= -0.02x^2 + x + 6

Answering rhe second question,  first.....the horizontal distance traveled =

-1/[2(-.02)]  = 25 ft  (???)

And the max ht. is given by

-.02(25)^2 + 25 + 6 =  18.5  (ft  ??)

Here's a graph of the function........https://www.desmos.com/calculator/mz7afyqedt

117.572 quadrillion miles  = 117, 572, 000, 000, 000, 000  miles

y=2tan3x

y'  = 6sec^2(3x)  

So

y' (-.6pi)  =  6sec^2 (-1.8 pi)   =   about 9.167

m³  - m²     believe it, or not, this can be factored as a difference of two squares as  :

( m^3/2  - m) ( m^3/2 + m)

8.2%  = .082  in decimal form.....so......

.082 x 50 =  4.1

Mmmmm.....well.  OK!!!

Example

.45     write  this [ without the decimal ] over 1 plus the number of 0's  equal to the number of decimal places  = 100....so we have.....

=   45 / 100   =  9 / 20

That's it !!!

[30 / 25   x 100]%   =

[6 / 5 x 100]%  =

[600/5] %   =

120%

Perform both multiplications, first

Then.....add the results

x component   = 12*cos(57°)

y component = 12*sin(57°)