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stepladder [879]

4 years ago

5

F(x)=-6x-8, what if f(-3)

1 answer:

Westkost [7]4 years ago

4 0

Answer:

f(-3) = 10

Step-by-step explanation:

Simply plug in x as -3 to find f(-3):

f(-3) = -6(-3) - 8

f(-3) = 18 - 8

f(-3) = 10

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Solve this questions

Alchen [17]

Answer:

a) Sale Price; Rs. 800 Discount rate: 20%

b) Sale Price; Rs. 4000 Discount rate: 20%

c) Sale Price; Rs. 6000 Discount rate: 35%

Step-by-step explanation:

1. Approach

In these problems, one is given a list of original prices and the amount of price taken off during a discount. One has to find the sale price and the rate of discount. The easiest way to find the sale price is to subtract the discount price from the original price. The general train of thought to do this can be found in the following formula:

$(original\ price)-(discount\ amount)=(sale\ price)$

One is also asked to find the rate of discount. Use the following proportion format to do so:

$\frac{discount\ amount}{original\ price}=\frac{percent}{100}$

Substitute each of the values in the given problem into the equation and solve for the price.

2. Part A

Original price: 1000

Discount: 200

<u>1. Sale price</u>

Formula
$(original\ price)-(discount\ amount)=(sale\ price)$
Substitute and solve,
$1000-200=(sale\ price)$

$\\800 = sale\ price$

<u>2. Discount rate</u>

Formula

$\frac{discount\ amount}{original\ price}=\frac{percent}{100}$

Substitute, simplify, and solve

$\frac{200}{1000}=\frac{percent}{100}$
$\frac{1}{5}=\frac{percent}{100}$

$(5)(percent)=1(100)$
$percent=20$

3. Part B

Original price: 5000

Discount: 1000

<u>1. Sale price</u>

Formula,
$(original\ price)-(discount\ amount)=(sale\ price)$
Substitute and solve
$5000-1000=(sale\ price)$
$4000=(sale\ price)$

<u>2. Discount rate</u>

Formula
$\frac{discount\ amount}{original\ price}=\frac{percent}{100}$
Substitute, simplify, and solve
$\frac{1000}{5000}=\frac{percent}{100}$
$\frac{1}{5}=\frac{percent}{100}$
$5(percent)=1(100)$

$percent=20$

4. Part C

Original price: 8000

Discount: 2000

<u>1. Sale price</u>

Formula
$(original\ price)-(discount\ amount)=(sale\ price)$
Substitute and solve
$8000-2000=(sale\ price)$
$6000=(sale\ price)$

<u>2. Discount rate</u>

Formula,
$\frac{discount}{amount}=\frac{percent}{100}$
Substitute, simplify and solve,
$\frac{2000}{8000}=\frac{percent}{100}$
$\frac{1}{4}=\frac{percent}{100}$
$4(percent)=1(100)$
$percent=25$

7 0

3 years ago

15,25,45,_,115,165<br><br> What’s the pattern?

Lynna [10]

Answer:

15, 25, 45, 75, 115, 165.

Step-by-step explanation:

pattern. So then you just stick the 5s back on 15, 25, 45, 75, 115, 165.

8 0

3 years ago

Tina thinks of two numbers. She says, "My two numbers add up to 12. Three times my first number plus twice my second number is 2

butalik [34]

The first number is 5 and the second number is 7

8 0

3 years ago

Find the missing term<br> (a^4+9a^3-10a^2)+(8a^4+__+a)=9a^4+15a^3-10a^2=a

Arte-miy333 [17]

Answer:

6a³

Step-by-step explanation:

a⁴ + 9a³ - 10a² + 8a⁴ + X + a = 9a⁴ + 15a³ - 10a² = a

9a⁴ + 9a³ - 10a² + X + a = 9a⁴ + 15a³ - 10a² = a

9a³ + X + a = 15a³ = a

6a³ = X

checking: a⁴+ 8a⁴ + 6a³ = 15a³

9a⁴= 9a³

= a

8 0

3 years ago

I ride at a speed of 9 kilometers per hour for 14.4 kilometers. For how many hours she ride

sveta [45]

Answer:

1.6 hours

Step-by-step explanation:

3 0

4 years ago

Read 2 more answers