If it has been marked up 40% then you now have 140%. To find 140% of $63 you need to multiply 63 by 1.4 to give $88.20. So the mark up is $25.20
18.5 you’d add 2.5 to 16 since 12.5 - 10 is 2.5 hope this helps
Answer:
Infinitely many solutions
Step-by-step explanation:

Therefore,
, which means all real values of p are solutions
Equation: 50 is greater than or equal to 45 + .5(x)
x = amount of pictures you can send without going over your budget
subtract 45 from both sides. you are left with: 5 is greater than or equal to .5(x)
multiply both sides by 2. you are left with: 10 is greater than or equal to x
Answer: 10 is greater than or equal to x
The positive square root of 35
= 5.9160797831 because 5.9160797831^2 is 35
Therefore you multiply 5.9160797831 to 5.9160797831