Select the correct answer.
Which transformation will always map a parallelogram onto itself?
A.
B.
C.
a 90° rotation about its center
a reflection across one of its diagonals
a 180° rotation about its center
D.
a reflection across a line joining the midpoints of opposite sides

Initially 100 milligrams of a radioactive substance was present. after 6 hours the mass had decreased by 4%. if the rate of decay is proportional to the amount of the substance present at time t, find the amount remaining after 24 hours. (round your answer to one decimal place.)

Four quarts of a latex enamel paint will cover about 200 square feet of wall surface. how many quarts are needed to cover 98 square feet of kitchen wall and 52 square feet of bathroom wall

The functions f(x) and g(x) are shown in the graph f(x)=x^2 what is g(x) ?