\(m = \frac{-7-3}{0+5} = -2\)
The y-intercept is (0, -7).
\(\boxed{y=-2x-7}\)
x^2 is always positive and the denominator can't be 0 ===> \(\boxed{(0, \infty)}\)
The sum of the numbers is 2i:
\(b+d+f = 2\)
\(d + f = \boxed{-1}\)
This is an optimization problem.
Let x be the increase in bikes sold. So, we can write the expression \((63+7x)(39-1.5x)\).
Simplify and complete the square to find the maximum revenue and the corresponding value of x.
\((Q)(E)(D) = (11-5i)(11+5i)(2i) = (121 + 25)(2i) = (146)(2i) = \boxed{292i}\)
(using difference of squares)
By the way, are you three people in the same class or one person with two alternate accounts?
This is a repost. Hope this helps.
https://web2.0calc.com/questions/domain-and-range_34
\(\sqrt{x^2 - 16} \geq 3\)
\(x^2 - 16 \geq 9\)
\(x^2 \geq 25\)
\(\boxed{x \in (-\infty, -5) \cup (5, \infty)}\)
\((4-5i)(-5+5i) = -20-25i+20i - 25i^2 = \boxed{5 - 5i}\)
\(-10x^2 -11x + 6 \geq 0\)
\(-(2x+3)(5x-2) \geq 0\)
\(\boxed{-\frac{3}{2} \leq x \leq \frac{2}{5}}\)
\(z^2 = (3+4i)^2 = 9 + 12i + 12i + 16i^2 = \boxed{-7 + 24i}\)
