All categories

3 years ago

Let f(x)=−42x+3. Evaluate f(−1)

Mathematics

1 answer:

Salsk061 [2.6K]3 years ago

3 0

Step-by-step explanation:

f(-1)=-42(-1)+3....placing -1 in x

f(-1)=42+3

f(-1)=45

You might be interested in

The Candy Shack sells 138 pounds of candy on Tuesday. They sold 71.76 pounds of jelly beans. What percent of the candy sold was

Pepsi [2]

Answer:

<h2>52% were jelly beans!</h2>

Explanation:

Cross multiply the following:

$\frac{x}{100} = \frac{71.76}{138}$

x times 138 = 138x

100 times 71.76 = 7,176

Divide both sides by 138:

$\frac{138x}{138} = \frac{7176}{138}$

6 0

3 years ago

Read 2 more answers

I need help with this question???

Sholpan [36]

Answer:

Step-by-step explanation:

Because -20 is more than -17 by -3

6 0

3 years ago

What lever has resistance between the axis (fulcrum) and the force (effort)? A. first B. second C. third D. fourth Please select

luda_lava [24]

Answer:

The correct option is B- second

8 0

3 years ago

Read 2 more answers

HELP ASAP

Natalija [7]

Answer:

The equation of the function: y = mx + b

m = slope = (y₂ - y₁)/(x₂ - x₁) = [5 - (-3)]/(4 - 0) = (5 + 3)/4 = 8/4 = 2
b = y-intercept = -3

Therefore, the equation is f(x) = 2x - 3

When x = 0, f(x) = 2(0) - 3 = -3

When x increases by 1, f(x) increases by 2 (slope = the rate of change)

5 0

2 years ago

-3x - 3y = 3 y= -5x - 17

Kruka [31]

you first plug (substitute) in y

-3x - 3(-5x-17)=3

then distribute

-3x+15x+51=3

now combine like terms

12x+51=3

subtract to get 12x by itself

12x=3-51 or 12x=-48

lastly divide by 12 to find x

12x/12=-48/12

x=-4

now find y by plugging x into the other equation

y=-5(-4)-17

y=3

(-4,3)

4 0

3 years ago