18 = 2x + 4
2x = 14
x = 7
answer
first line: 1st box: 18 and 2nd box: 4
second line: $7 an hour
Answer:
We conclude that 'None of the above' is the correct answer.
Step-by-step explanation:
Given the expression

Breaking the expression into groups

Factor out
from

Factor out -2 from 

so the expression becomes


Factor out the common term 

Therefore, from the given options, we conclude that 'None of the above' is the correct answer.
Answer: 615.4
Step-by-step explanation:

if the radius is 14

Using the formula S = ut +1/2at²
S=h= 20ft, u = 2ft/s, and a = 10m/s²
Thus; 20 =2t + 20t²
Therefore; 20t²+2t-20=0
Solving the equation quadratically for the value of t,
we get; t = 1.057 or t=-1.182
But t can not be negative,
Therefore, t= 1.1 seconds (to the nearest tenth)