The rate at which the maximum temperature changes for 1 6  t is modeled by ( ) 4 2sin 5 6 t R t    = − −     where Rt() is measured F /minute. Find R(4) and explain what it means in the context of the problem using correct units.

just take the area of the square and then the area of the circle then subtract the circle area from the squares area

step-by-step explanation:

b) k’(6, 4); l’(3, 3)

step-by-step explanation:

a 270° clockwise rotation maps every point (x, y) to (y, -x). (it negates the x-coordinate and then switches it and the y-coordinate.)

this means the endpoints of the side congruent to kl, k' and l', would be mapped as:

k'(-4, 6)→(6, 4)

l'(-3, 3)→(3, 3)

-60.75

step-by-step explanation:

just add the numbers then put the negative sign on it