So this is taking this equation and plugging it into the quadratic formula -b+- (sqrt (b^2)-(4)ac)/2a so your A value is 1 B value is 3 and C value is -5 so it’s B&E
f(x) represents the total number of pages Antonia has read; x represents the number of days
Cookies : 9, 18, 27, 36,
Ice cream: 12, 24, 36
So in 36 days.
Answer: 2,306,973.7 rounded... 2,306,974
900,000(1+.04)^24