Evaluate the function at the indicated values if possible. if an indicated value is not in the domain, say so.
f left parenthesis x right parenthesis equals startfraction x plus 7 over x squared minus 9 endfraction
; f left parenthesis negative 7 right parenthesis, f left parenthesis 2 right parenthesis, f left parenthesis 3 right parenthesis

f(-7)=0.

f(2)=-9/5.

f(3) doesn't exist because 3 isn't in the domain of the function.

Step-by-step explanation:

is the given function.

We are asked to find:

.

f(-7) means to replace x in the expression called f with -7:

Evaluate at

So f(-7)=0.

f(2) means to replace x in the expression called f with 2:

Evaluate at

So f(2)=-9/5

f(3) means to replace x in the expression called f with 3:

Evaluate at

Division by 0 is not allowed so 3 is not in the domain of our function.

option c) graph of line going through 1, 4 and 3, 10

step-by-step explanation:

let y equal to margo's coin collection

let x equal to number of years

at the begining x=0, y=1 → point=(x,y)→point=(0,1)

she adds 3 coins per year, then y=1+3x

at x=1, y=1+3(1)=1+3→y=4→point=(x,y)→point=(1,4)

at x=3, y=1+3(3)=1+9→y=10→point=(x,y)→point=(3,10)

the graph of line going through (1, 4) and (3, 10), then the option c is the correct.

0.02

step-by-step explanation:

time of 9 192 631 770 periods of the radiation corresponding to the transition between the 2 hyperfine levels of the ground state of the caesium 133 atom at 0 k (but other seconds are sometimes used in astronomy)