Free SAT Practice Questions

Question 1 of 1
ID: SAT-HOA-8
Section: Math - Heart of Algebra
Topics: Heart of Algebra; Quadratic function
Difficulty level: Hard

(Practice Mode: Single selected Question » Back to Overview)

To preserve the ecological balance of a reserve, a number of lions were released in the reserve in 2000. Initially, there were only 5 lions in the reserve. After the observation of a few years, a function $L\left(n\right)={\left(n+1\right)}^2+(n+1)+15$ was developed to represent the number of lions in the reserve, where $L\left(n\right) $represents the number of lions and$\mathrm{\ }n$ represents the number of years after which they were released. Assume that no lion died during this period. Based on the above function, which of the following statements are correct? (without calculator)

  1. 10 lions were released in the reserve in 2000.
  2. The increase in the number of lions in the third year was 8.
  3. The total number of lions in the beginning of the third year was 27.
AOnly I
BI and II
CII and III
DAll three