4. You have $3,000 and want to double it in 5 years. What rate of return must your

Mathematics

1 answer:

VladimirAG [237]3 years ago

7 0

Answer:

4.3% , 645 ÷ 5 = 129, 4.3% of 3000 is 129

Step-by-step explanation:

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Mamont248 [21]

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3 years ago

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Use the discriminant to determine which graph could represent the equation. y=x^2+4x+5

lidiya [134]

ANSWER

See attachment.

EXPLANATION

The given function is

$y = {x}^{2} + 4x + 5$

When we compare this function to

$y = a{x}^{2} + bx + c$

We have a=1, b=4 and c=5

We put this inside the formula for the discriminant, which is

$D = {b}^{2} - 4ac$

$D = {4}^{2} - 4(1)(5)$

$D = 16 - 20 = - 4$

Since the discriminant is negative, the function has no x-intercepts.

The graph of this function is the one hanging in the air above the x-axis and opens upwards.