Question
A biology class at high school predicted that a local
population of animals will double in size every 12 years. The population at the beginning of the year 2021 was estimated to be 50 animals. If P represents the population after n years, then which one of the following equations represents the model of the class for the population?Solution
The correct answer is D
If x2 – 5x + 1 = 0, then find the value of {x2 + (1/x2)}.
If a = (√2 - 1)1/3, then the value of (a-1/a)3 +3(a-1/a) is:
If both the roots of x 2 Â + kx + 49 = 0 are real and equal, then find the value of 'k'.
3x +3y =10 and 3x+y =5 then find the value of 3x-y +3y-x.
If x ,y,z are three integers such that x +y = 8,y +z =13 and z +x =17,then the value of x2 /yz  is:
Let {x + (1/x)} = 4, then Determine the value of {x² + (1/x²)}
Find ‘x’ if (x³+3x)/(3x²+1) = 189/61
If a + b + c = 6, a² + b² + c² = 14 and ab + bc+ ca = 11, then what is the value of a³ + b³ +c³ –3abc?
- If p = 35 - q - r and pq + r(p + q) = 324, then find the value of (p² + q² + r²).