Choice C , Company C and Company D. hope I helped.
The inverse is found by interchanging x and y
f(x) = y
Multiply both sides by y + 1
x*(y + 1) = 2y - 3 Remove the brackets on the left
xy + x = 2y - 3 Subtract xy on both sides
x = 2y - xy - 3 Add 3 to both sides
x + 3 = 2y - xy Factor out y on the right. Use the inverse distributive law
x + 3 = y*(2 - x) Divide both sides by 2 - x
1/4(5b + 11) = 19....multiply both sides by 4, eliminating the 1/4
5b + 11 = 19 * 4
5b + 11 = 76
5b = 76 - 11
5b = 65
b = 65/5
b = 13 <==
Answer:
Step-by-step explanation:
80 minutes.......8 minutes played commercials....that means (80 - 8) = 72 minutes played music
so the ratio of music to commercials is : 72/8 which reduces to 9/1...so the ratio is 9:1 <=== ur answer
** pay attention to the wording, because if it would have asked for the ratio of commercials to music, it would have been 8/72....ratio would be 1:9