Put -b over 2(A) and than you’ll get the X value to your vertex than plug your X value into the equation and you’ll get the vertex
The answer for the question is 31
B not quiet sure but if anything try again : )
Given:
Investment (P) = $10000
Rate of interest (R) = 3.5%
Time (T) = 7 years
To find:
Amount in the account after 7 years
Solution:
Simple interest formula:
Simple interest = $2450
Amount = Investment + Interest
= 10000 + 2450
= 12450
Therefore $12,450 will be in the account after 7 years.