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3 years ago

8

Please I need this question fast

1 answer:

Mrrafil [7]3 years ago

6 0

We have a linear function $\displaystyle\bf y=\underbrace{k}_{gradient}x+b$ and we know that $\displaystyle\bf \left \{ {{-2\cdot-3+b=2} \atop {-4\cdot -2+b=k}} \right. => \left \{ {{b=-4} \atop {b+8=k} \right. => k=8-4=4 \\\\Answer: \boxed{B) \quad k=4}$

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1.) IF f(x)=3x-5 and g(x)=x^2, find (fxg)(3)

kodGreya [7K]

Please use * to denote mult. here, not "x." "x" is your variable and cannnot also be a symbol for mult.

f(x)g(x) = 3x^3 - 5x^2.

Now let x = 3:

(f*g)(3) = 3(3)^3 - 5(3)^2 = 81-45 = 36 (answer)

8 0

3 years ago

HELP ME IM SO CONFUSED

givi [52]

Answer:

1) 4812 students
2) 763 pounds
3) $30906.76

Step-by-step explanation:

1)

Initial number = 2988
Rate of increase = 10%

<u>Number of students after 6 years:</u>

$a_6 = 2988(1+0.1)^{6-1} = 4812$

2)

Initial number = 1200
Rate of decrease = 14%

<u>Amount of gold after 4 years:</u>

$a_4=1200(1-0.14)^3 = 763$

3)

Initial number = 28000
Rate of increase = 2.5%

a)

<u>Salary after n years:</u>

$a_n=28000(1+0.025)^{n-1} = 28000*1.025^{n-1}$

b)

<u>Salary in the 5th year:</u>

$a_5=28000*1.025^4 = 30906.76$

6 0

2 years ago

Read 2 more answers

What would your salary each year be if you earned $5,000 per week?

choli [55]

Yearly salary would be 240,000 for 5,000 and 48,000 for 1,000 a week

8 0

3 years ago

Please help I’m BEGGING

Degger [83]

Answer:

Bro math Step-by-step explanation:

5 0

3 years ago

Determine the vertical asymptote for the rational function f(x) = x - 4 over 2x + 3.

mr_godi [17]

Vertical asymptotes happen at x=a if the function is undefined at x=a.

This is a rational functions, and rational functions are not defined when the denominator is zero, since you can't divide by zero.

In this case, the denominator is zero if

$2x+3=0 \iff 2x=-3 \iff x=-\drac{3}{2}$

And thus the function has a vertical asymptote at x= -3/2

3 0

3 years ago