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3 years ago

Assume f(x) = -2x+8 and g(x) = 5x. What is the value of (f o g)(3)?

Mathematics

1 answer:

makkiz [27]3 years ago

4 0

Answer: C

Step-by-step explanation:

(fog)(3) is the same as finding f(g(3)). To solve, we first need to solve g(3). then, we solve for f(g(3)).

g(3)=5(3) [multiply]

g(3)=15

Now, we plug in 15 into f(x).

f(g(3))=-2(15)+8 [multiply]

f(g(3))=-30+8 [add]

f(g(3))=-22

Now, we know that C is the correct answer.

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A 12-gallon tub has a faucet that lets water in at a rate of 3 gallons per minute, and a drain that lets water out at a rate of

sergiy2304 [10]

Vol of water required to fill up the tub = 12-3 = 9
Rate of water per min =    3 -1.5 = 1.5/min
Using the formula           vol   =   rt
                                            t = v/r
                                            t =    9/1.5    =   6
time taken =    6 mins

6 0

3 years ago

If I have 85 dollars and I have to split it between 7 people, what is the most I can spend on each person?

pashok25 [27]

Each person will get 12 dollars

Step-by-step explanation:

Given

Total amount = 85 dollars

Total people = 7

As it has to be divided among 7 people, the total amount will be divided by 7

So,

Each person will get:

$=\frac{85}{7}\\= 12.14$

Rounding off to nearest whole number

12 dollars each with 1 dollar remaining

Hence,

Each person will get 12 dollars

Keywords: Dollars, Fractions

Learn more about fractions at:

#LearnwithBrainly

4 0

3 years ago

Last month karmin made $480 working for 30 hours this month she will get a 15% increase in the amount she earns per hour what wi

saul85 [17]

Answer:

$18.40

Step-by-step explanation:

480/30= 16

$16 is the amount earned per hour

16×.15= 2.40

$2.40 is 15% increase in the amount she earns per hour

16+2.40=18.40

$18.40 is hourly rate in dollars after the increase

8 0

3 years ago

In the equation y = - ⅗x - 7, what is the slope

CaHeK987 [17]

The slope is -3/5.

The equation is in slope intercept form,
y= mx + b, where m is the slope.

3 0

3 years ago

Chicken costs $3.20 per pound, and beef costs $4.59 per pound. How much more does 3 pounds of beef cost than 3 pound of chicken?

tensa zangetsu [6.8K]

To find the difference, first calculate how much 3 pounds of each meat costs.

$3.20 × 3 = $9.60 for 3 pounds of chicken

$4.59 × 3 = $13.77 for 3 pounds of beef

Now, take the difference.

$13.77 - $9.60 = $4.17

<h3>Answer:</h3>

3 pounds of beef costs $4.17 more than 3 pounds of chicken.

7 0

3 years ago