Answer:
3n+16
Step-by-step explanation:
three times: (3) a number n +16
(3)n+16 or 3xn+16
3n+16
Answer: 34.3%
Step-by-step explanation:

To find the percent, divide then multiply by 100:

7 and 8 because the square root is 7.874
Answer: 60= $3.00 and 30= $4.00
x=# of $3 tickets
90-x=# of $4 tickets
$3x+$4(90-x)=$300
3x+360-4x=300
-x+360=300
-x=-360+300
-x=-60
x=60 $3 tickets
90-60=30 $4 tickets
Answer: -5
Step-by-step explanation: 19 -9 = 10. 10/-2 = -5