2007-01-19 09:04:38 · 7 answers · asked by haileybaby331 1 in Science & Mathematics ➔ Mathematics
90
Plug it in.
When you need to evalutate a function f(x) for x = some given value, just plug the vlaue in place of the x and simplify.
Here, you'd do
10 * 3^2 = (order of operations, exponents comes before multilplication, so 3^2 = 3x3 = 90)
10x9 = 90
2007-01-19 09:08:07 · answer #1 · answered by Joni DaNerd 6 · 1⤊ 0⤋
Find f(2) when the function is: f(x)=10(3^x)
First: the problem gives you the value/number for the x-variable...
Sec: replace "2" with the x-variable...
f(2) = 10(3^2)
f(2) = 10(3*3)
f(2) = 10(9)
f(2) = 90
2007-01-19 18:28:31 · answer #2 · answered by ♪♥Annie♥♪ 6 · 0⤊ 0⤋
plug 2 in for x. 10 times 3^2 90
2007-01-19 17:07:55 · answer #3 · answered by thisgirl_lovesanimals 1 · 1⤊ 0⤋
this means that 2 is x in this equation so..... u would have 10 times 3 to the second (or 10 times 3 squared) which is equal to 10 times 9 which is 90. so ur answer is 90
2007-01-19 17:06:59 · answer #4 · answered by flatteredwu 5 · 1⤊ 0⤋
90
2007-01-19 17:08:37 · answer #5 · answered by ngoc v 1 · 0⤊ 0⤋
functions are like machines that take in a number, do something with it, then a different number comes out.
to find f(2), replace all the x's with 2 and simplify.
you have to think about the order of operations. you have to simplify the exponent first. 10x3^2=10x9=90=f(2)
2007-01-19 17:10:05 · answer #6 · answered by Beauregard B 2 · 0⤊ 0⤋
f(x) = 10*3^x
f(2) = 10*3^2 = 90
:)
2007-01-19 17:07:57 · answer #7 · answered by Anonymous · 1⤊ 0⤋