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Fynjy0 [20]
3 years ago
9

1 11 f(x) = 2x² – 7x - 1 g(x) = 4x + 5 Find: go f(8)

Mathematics
1 answer:
Snezhnost [94]3 years ago
6 0

Answer: 71

Step-by-step explanation:

F(8)= 2(8)^2-7(8)-1

=71

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If the function f(x) = -1/2x - 7 were graphed, which of the following would be true?
Fittoniya [83]
ANSWER

D. As the x-values increase, the y-values would decrease

EXPLANATION

The given function is
y =  -  \frac{1}{2} x - 7


The slope of this function is
m =  -  \frac{1}{2}

Since the slope is negative, there is a negative or an inverse relationship between x and y.

As the values of x increases, the values of y decreases.

Also, as the values of x decreases, the values of y increases.

The first option is not true because as x is becoming bigger and bigger negatively, y will become positive.

For instance, when
x =  - 40
y =  -  \frac{1}{2} ( - 40) - 7


This implies that,

y = 20 - 7 = 13

Options B is obviously not true because the function has a negative relationship between x and y.


Option C is also false because, x can be positive since it is the independent variable.

See graph



Therefore, the correct answer is option D.




5 0
3 years ago
a lady purchased a question for $68 if the jacket was on sale for 20% off what was the original price of the jacket
nekit [7.7K]

Answer:

$85

Step-by-step explanation:

100%-20%=80% and 80% = 0.8

So,

0.8x=68

x=85

8 0
3 years ago
Read 2 more answers
A middle school took all of its 6th grade students on a field trip to see a symphony. The students filled 300 seats, which was 1
prisoha [69]

Answer:

3,000

Step-by-step explanation:

Basically, there are 300 seats filled which is 10%

100% is 10x10

300=10%

multiply both sides by 10

300x10=3000 and 10x10=100

therefore, the total number of seats is 3000 since 100% represents the whole thing.

Hope this was helpful!

5 0
3 years ago
Celine's book club read 42 books over 14 months. How many total months will it take them to read 57 books? Solve using unit rate
miskamm [114]

Answer:

Step-by-step explanation:

42/14 = 57/x

42x = 57*14

42x = 798

x = 19 months

4 0
3 years ago
Please help me i cannot understand these Questions
elixir [45]
Where are the questions
6 0
3 years ago
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