All categories

3 years ago

Evaluate ƒ(–3) for ƒ(x) = –5x2 + 2x –1.

1 answer:

6 0

Evaluate ƒ(–3) for ƒ(x) = –5x2 + 2x –1.
ƒ(x) = –5x2 + 2x –1
First, Substitute x by -3 in the formula of the function and calculate as follows.
ƒ(-3) = –5x2 + 2x –1
Apply the Order of Operations.
ƒ(-3) = –5(-3)^2 + 2(-3) –1
Simplify
ƒ(-3) = –5(9) + 2(-3) –1
ƒ(-3) = –45 -6 –1
ƒ(-3) = -52

Therefore, The function of ƒ(–3) for ƒ(x) = –5x2 + 2x –1 is -52

You might be interested in

construct a 99% confidence interval of the population proportion using the given information. x=240 n=300

Veronika [31]

Confidence interval for population proportion is

sample proportion +/- confidence coefficient*standard error of p

Sample proportion = p = x/n = 180/300 = 0.6

Confidence coefficient is the critical value of z for 95% confidence level = 1.96

Standard error of p = sqrt [p*(1-p)/n]

= sqrt [0.6*0.4/300]

= 0.0283

The CI is

0.6 +/- 1.96*0.0283

0.6 +/- 0.055

lower boundary is 0.6-0.055 = 0.545

upper boundary is 0.6+0.055 = 0.655

The CI is (0.545, 0.655)

5 0

3 years ago

Solve the equation 2x-3=15 A)x=6 B)x=9 C)x=24 D)x=36

DaniilM [7]

To solve the equation, it is necessary to isolate the unknown variable "x" first. This is done as shown below:

2x - 3 = 15

Adding 3 to both sides of the equation:

2x - 3 + 3 = 15 + 3
2x = 18

Dividing 2 from both sides:

2x/2 = 18/2
x = 9

Among the choices, the correct answer is B.

5 0

4 years ago

A phone company is offering several different prepaid data plans.

alex41 [277]

Answer:

i dont know HI its Prepaid Single Phone Plan $45 for 16 GB

6 0

3 years ago

Read 2 more answers

When peanuts are packaged in their shells, most shells have two peanuts inside, but some have three and some only have one. A qu

Dmitrij [34]

Answer:

c- H0: p = 0.1 and Ha: p > 0.1

Step-by-step explanation:

3 0

3 years ago

7r + 2 - 3r = -2 plsss

KonstantinChe [14]

Answer:

Combine like terms

4r+2=-2

Subtract 2 from both sides

4r=-4

Divide 4 by from both sides

r=-1

8 0

3 years ago