Answer:
The answer is r < or equal to 15.5.
Step-by-step explanation:
63/80 x 100 = 78.8%
You divide normally but multiply by 100 (moving the decimal over two places).
ANSWER
The particular solution is:

EXPLANATION
The given Ordinary Differential Equation is

The general solution to this Differential equation is:

To find the particular solution, we need to apply the initial conditions (ICs)

This implies that;




Hence the particular solution is

18m^2
area of a trapezoid = (a+b)/2 * h, where a and b are bases 1 and 2, and h is height
(4+8)/2 * 3
= 12/2 * 3
= 6 * 3
= 18