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Anna35 [415]
3 years ago
11

What is the y-intercept of the function f(x)=4 – 5x?A:-5B:-4C:4D:-5​

Mathematics
1 answer:
7nadin3 [17]3 years ago
4 0

Answer:

C. 4

Step-by-step explanation:

Rewrite the equation in terms of y = mx + b

f(x) = -5x + 4

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Rex runs one mile in 5 minutes, Stan runs one mile in 6 minutes, and Tim runs one mile in 7 minutes. There are 5280 feet in one
Brums [2.3K]

Answer:

628.5ft

Step-by-step explanation:

Find the velocity of Tim and Stan, by dividing the distance between the time:

v_T=\frac{5280}{7} =754.3 ft/min

v_S=\frac{5280}{6} =880ft/min

The distance that Stan and Tim travel in 5 minutes is equal to their respective velocity multiplied by the time.

d_T=754.3\times5=3771.5ft\\

d_S=880\times5=4400ft

The answer to the question is the difference in miles traveled by Stan minus those traveled by Tim.

R=4400-3771.5=628.5ft

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3 years ago
If f(x)=4x+5, what is the value of f(-3)
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Answer:

f(-3) = -7

Step-by-step explanation:

Given:

f(x) = 4x + 5

x = -3

Plug in -3 for x in the equation:

f(-3) = 4(-3) + 5

Remember to follow PEMDAS. First multiply, then add:

f(-3) = 4(-3) + 5

f(-3) = -12 + 5

f(-3) = -7

f(-3) = -7 is your answer.

~

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