10y+x²
10(5)+(2)²
10(5)+4
50+4
54
Therefore, the expression has a value of 54.
I think that the best answer is A
Answer:
8.0000
Step-by-step explanation:
To find this out, use a percent proportion, use cross products, and solve the equation.

So, the percent tip is 14%.
Some number y has 7 subtracted off to get 15. We have y-7 = 15. To isolate y, we have to undo the "subtract 7" operation that happens to y. We have to add 7 to both sides.
y-7 = 15
y-7+7 = 15+7
y = 22 is the answer