Write a numerical expression for this statement.
David had 36 books. He gave away 12. Then he sold each book for $3.

36=3x-12

Step-by-step explanation:

I just know

36-12-3x

this is the correct answer in a numerical expression.

step-by-step explanation:

here's what happens:

1) the graph of f   = x^2 is shifted 2 units to the right.

2) the resulting graph is reflected in the x-axis, so that the parabola now opens down.

3) this final result is transformed up by 5 units.

0.02

step-by-step explanation:

time of 9 192 631 770 periods of the radiation corresponding to the transition between the 2 hyperfine levels of the ground state of the caesium 133 atom at 0 k (but other seconds are sometimes used in astronomy)