حل هوم ورك (11) 2.5 section

[hemo10]

السلام عليكم ورحمه الله وبركاته


يعطيك العافيه اختي عالاجابات

بس عندي سؤال 4 و 7 ماني بعارف احلهم ويا ليت لو اي واحد يقدر يجاوب

If f and g are continuous functions with f(1) = 4 and the following limit, find g(1).

lim:x-->1 (3f(x)-g(x))=5

For what value of the constant c is the function f continuous on (-, )?

f (x = cx*2 + 8x if x < 3
f (x = x*3 - cx if x > or = 3

please if there's anyone knows how to solve them i would be glad

ملاحظه :
علامه النجمه يعني (اس)