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zloy xaker [14]
3 years ago
9

What is the average rate of change for this quadratic function for the interval from x =3 to x = 5

Mathematics
1 answer:
Mrrafil [7]3 years ago
5 0

Answer:

A

Step-by-step explanation:

The average rate of change of f(x) in the closed interval [ a, b ] is

\frac{f(b)-f(a)}{b-a}

here [ a, b [ = [ 3, 5 ]

From the table

f(b) = f(5) = - 26

f(a) = f(3) = - 10

Hence average rate of change

= \frac{-26-(-10)}{5-3} = \frac{-16}{2} = - 8 → A

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Answer:

Moderate

Step-by-step explanation:

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Question is in the picture
MrRa [10]

Answer:

B)  12.5 ft

Step-by-step explanation:

set up a proportion of inches/feet equals inches/feet

let 'h' = height of sign

5.4/18 = 3.75/h

cross-multiply:

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2 years ago
Lori had $88. She earned $29 walking dogs. After she spent money for concert tickets, Lori has $74 remaining.
BaLLatris [955]

Answer: $43

Step-by-step explanation:

total 88 + 29 = 117

117-74 = cost of concert tickets

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4 0
3 years ago
Read 2 more answers
Giving medal. A new car that sells for $21,000 depreciates (decreases in value) 16% each year. Write a function that models the
Natali5045456 [20]
$21,000-16%
16% of $21,000 is $3,360
$21,000-$3,360=$17,640
1st year would be $17,640

16% of $17,640 is  $2,822
$17,640-$2,822 is $14,817
2nd year would be $14,817

16% of $14,817 is $2,370
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3rd year would be $12,446

$12,446 rounded would be $12,447

So A) $12,447

Hope this helps out :)
4 0
3 years ago
Read 2 more answers
3x+4=7-2x <br> Solve this equation for x with steps
ollegr [7]
Simplifying
3x + 4 = 7 + -2x

Reorder the terms:
4 + 3x = 7 + -2x

Solving
4 + 3x = 7 + -2x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '2x' to each side of the equation.
4 + 3x + 2x = 7 + -2x + 2x

Combine like terms: 3x + 2x = 5x
4 + 5x = 7 + -2x + 2x

Combine like terms: -2x + 2x = 0
4 + 5x = 7 + 0
4 + 5x = 7

Add '-4' to each side of the equation.
4 + -4 + 5x = 7 + -4

Combine like terms: 4 + -4 = 0
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Combine like terms: 7 + -4 = 3
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Divide each side by '5'.
x = 0.6

Answer: x = 0.6
5 0
2 years ago
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