<span>let x be the interval, then:
186 = 50 + 3 + (3+x) + (3+2x) + (3+3x) + (3+4x) + (3+5x) + (3+6x) + (3+7x)
186 = 74 + 28x
x = 4
Eldest son age = 3+7x = 3+28 = 31.</span>
I agree with the answer above
I=400(0.04)(5)
Interest is 80 dollars of interest
400+80=480
I think that is the answer you're looking for :)
Answer:
4455587111*#654..++4756##8008/+.+=///=!558887425
Vertex = (1/2,5/2) x= 1 + or - square root of 5-2y all over 2
