Answer:
x=17
Step-by-step explanation
i just did the exact same question on a test and got it right .
About 6.3 inches after 14 day!
.45 x 14=6.3
1/5 is 2% or 0.2, therefor 2/5 is 4% or 0.4
A=3
B=4
C=5
Substitute 3 in for 'a' in the equation, and 5 in for 'c' in the equation to get 17.