3 years ago

What is f(–3) for f(x) = 2x2 – x + 5? A) 11 B) 17 C) 20 D) 26

Mathematics

1 answer:

nirvana33 [79]3 years ago

6 0

Answer: D

Step-by-step explanation:

f(x) = 2x² - x + 5

f(-3) = 2(-3)² - (-3) + 5

= 2(9) + 3 + 5

= 18 + 3 + 5

= 26

You might be interested in

11/12 - (-10) - 5/6 as a single rational number

Harlamova29_29 [7]

Answer:

121/12

Step-by-step explanation:

1. 11/12 - (-10) = 11/12+10 = 131/12

2. 131/12-5/6 = 131/12 - 10/12 = 121/12

7 0

3 years ago

Please help!!!! I'm terrible at algebra and I need your help!!!

noname [10]

It will be the third one

5 0

3 years ago

What is the value of x? Enter your answer in the box. x = ___

lapo4ka [179]

Answer:

x=8

Explanation:

The picture tells us that the triangle is equilateral (this means that each angle is 60°). We can assume this because each side has been marked with the same line.

Because each angle is equal to 60°, this means that:

7x+4=60

Now solve for x:

7x=56
x=8

5 0

3 years ago

The new school and my parents ordered me for my birthday cost $140.00 They were not happy that they had to pay 5% shipping fee w

ExtremeBDS [4]

5% of 140 is 7 so the answer is $147

3 0

2 years ago

Jenny has been saving quarters in a piggy bank since she was born. She currently has 192 quarters in her piggy bank. She decides

Mrac [35]

Answer:

D) She has a total of $62 in the piggy bank.

Step-by-step explanation:

Jenny has been saving quarters in a piggy bank since she was born.

She decides to add 56 more quarters so that she can buy a $65 phone.

So she has 192 + 56 = 248 quarters currently.

1 quarter is equivalent to $0.25

248 quarters equals;

$\frac{248}{1}$ × $0.25 = $62

So Jenny has a total of $62 in the piggy bank.

5 0

3 years ago