Determine all numbers at which the function is continuous. x+ + 5x - 36

f(x) = x + 8x-9

13

if x-9

if x=-9

10

a.

continuous at every real number except x = 1 and x = -9

b. continuous at every real number except x = -9

continuous at every real number except x = 1

d. continuous at every real number except x = -9 and x = 4

c.

Liz is shipping a package to her friend. the maximum weight of a medium flat-rate box is 20 pounds, including the box which weighs 6 ounces. write and solve an inequality to describe the possible weight in pounds, w, of the contents that liz will ship to her friend if she must use a medium flat-rate box. use the drop-down menus to explain your answer.