Yes 87 is greater then 13.6889
Let r represent reptiles
210=3r-120
330=3r
110=r
110 reptiles
√(x+7) = x + 1
Squaring on both sides,
x + 7 = (x + 1)²
x + 7 = x² + 2x + 1
x² + x - 6 = 0
x² + 3x - 2x - 6 = 0
x(x + 3) - 2(x + 3) = 0
(x - 2)(x + 3) = 0
x = 2 or -3
Hope this helps!
Function notation<span> is the way a </span>function<span> is written. It is meant to be a precise way of giving information about </span><span /><span>the</span>function<span> without a rather lengthy writtern</span>
Answer:
<em>f(x) = 2(x + 2)(x - 3)(x - 4) or</em>
<em>f(x) = 2x^3 - 10x^2 - 4x + 48</em>
Step-by-step explanation:
If a cubic function has zeros a, b, c, then its equation is
f(x) = k(x - a)(x - b)(x c)
f(x) = k(x - (-2))(x - 3)(x - 4)
f(x) = k(x + 2)(x - 3)(x - 4)
f(5) = k(5 + 2)(5 - 3)(5 - 4)
f(5) = k(7)(2)(1)
f(5) = 14k
We are told f(5) = 28, so we set 14 equal to 28 and solve for k.
14k = 28
k = 2
f(x) = 2(x + 2)(x - 3)(x - 4)
f(x) = 2x^3 - 10x^2 - 4x + 48