Answer:
f(-3) = -4
Step-by-step explanation:
f(x) = -2x² - 3x + 5
f(-3) = -2(-3)² - 3(-3) + 5
f(-3) = -2(9) + 9 + 5
f(-3) = -18 + 9 + 5
f(-3) = -9 + 5
f(-3) = -4
Answer:
zero
Step-by-step explanation:
The answer to that question is best found by looking at the value of the <em>discriminant</em>.
For quadratic ax^2 +bx +c = 0, the value of the discriminant is ...
d = b^2 -4ac
Here, you have a=3, b=8, c=7, so the discriminant is ...
d = 8^2 -4(3)(7) = 64 -84 = -20
When the discriminant is negative, both solutions are complex (not real).
There are zero real solutions to this equation.
Answer:
y = 3 + 0.25x
Step-by-step explanation:
<em>x</em><em> represents the miles and if Skyler is charged $0.25 per mile, then </em><em>x</em><em> goes with the </em><em>0.25.</em><em> The $3 is a flat fee and doesn't get added any more times then when it is first added.</em>
Use the equation and the map it might help so you can check your answer both ways tell me what the equation is and ill help a little more