Answer:
D is the right answer for this question
There are to answers 1. c=3000/7x+500/7.
2. 0.07c
$32.75 + $39.88 = $72.63
$72.63 • 18 = 1,307.34
1,307.34/100 = 13.0734 which you make into $13.07 tip.
13.07 + 72.63 = $85.70
Use your rules of logs. First the sum of two logs with same base is the product of the parts. Log7 (5x) = log7 60. Now since both sides have same log and base the parts are equal. 5x = 60. Divide by 5 to get a result of x = 12
To find a number in between you could multiply 39/130 by 2/2
and 40/130 by 2/2 to get
78/260 and 80/260
