For 49 It's 4*12 and 2*24 and 1*48 and for 64 it's 8*8 and 2*32
38 % of amount is spent on broadcast TV advertising
<em><u>Solution:</u></em>
Given that,
Amount spend on broadcast TV ad = $ 22, 000
Amount spend on cable TV ad = $ 30, 000
Amount spend on radio ad = $ 6000
To find: percentage of broadcast TV advertising
Total amount = $ 22, 000 + $ 30, 000 + $ 6000
Total amount = $ 58000
percentage of broadcast TV advertising = 

Thus 38 % of amount is spent on broadcast TV advertising
ANSWER

EXPLANATION
If f(x) is continuous at

Then,

The given function is





Since,

The function is continuous at

(x-7)/(7-x) if you factor out -1 from the numerator you get:
-(7-x)/(7-x) which is equal to:
-1