The Chang family is on
their way home from a
cross-country road trip.
During the trip, the
function
D(t) = 2,280 - 60t can be
used to model their
distance, in miles, from
home after t hours of
driving.
Find D(15) and interpret
the meaning in the context
of the probieu.
If DC) = 1,200, find the
value of ĉ and interpret its
meaning in the context of
the problem.

answer: i think it's a

step-by-step explanation:

the answer is ! ?

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)