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3 years ago

F(x)= 4x-5 what is f(100)?

Mathematics

1 answer:

notsponge [240]3 years ago

4 0

Answer:

26.25 = x

Step-by-step explanation:

f ( x ) = 4x - 5

f ( x ) = Y-value

x = x - value

If f ( 100 ) = The Y is 100

100 = 4x - 5

+5 = +5 Add 5 on both sides. The 5's will cancel on the right

-------------------

105 = 4x Divide by 4 on both sides. The 4's will cancel on the right

----- = ----

4 = 4

26.25 = x

Hope this helps!!

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Car A travels 20 mph faster than Car B. In the same time that Car A travels 252 miles, Car B travels 196 miles. Find their speed

RoseWind [281]

<u>Answer:</u>

A = 70

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<u>Step-by-step explanation:</u>

We know that Car A travels 20 mph faster than Car B.

Assuming the speed of Car B to be x and the speed of Car A to be x+20, we can write:

$\frac{196}{x} =\frac{252}{x+20}$

Taking the reciprocal of both sides to make x the subject:

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malfutka [58]

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