For solving a question like this where you have to find a function for a particular value, just put the given number in place of the unknown variable i.e. x in this case. Lets solve this function now.
We are to solve for f(9), so we will put 9 in place of x:
f(x) = 72+4x
f(9) = 72 + 4(9)
f(9) = 72 + 36
f(9)= 108
so, your function for the value 9 is 108.
Answer:
bjc hnfj yn yt NV ubf. giving! y NV,
Answer:
--3 ±sqrt((-3)^2 -4(4)(-9))
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2(4)
Step-by-step explanation:
4x^2-5=3x+4
We need to get this in standard form to answer the question
Subtract 3x from each side
4x^2-3x-5=3x-3x+4
4x^2-3x-5=+4
Subtract 4 from each side
4x^2-3x-9 =0
a = 4
b = -3
c = -9
-b ±sqrt(b^2 -4ac)
---------------------------
2a
--3 ±sqrt((-3)^2 -4(4)(-9))
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2(4)
I don’t know if this is right but i looked it up because i was clueless… it says, “(-1,29) ∪ (26,50) (-3,5) ∪ (5,10) (-1,2) ∪ (-4,0)
Step-by-step explanation:
let, the 3rd game score be x
then 1st game score becomes = x+10
2nd game score becomes = x-5
total=275
x+x+10+x-5=275
3x+5=275
x= 270÷3
x=90
1st game score becomes = x+10= 90+10= 100