Antonio purchased adult and child tickets for the fair. tickets cost $29.35 for each adult and $17.45 for each child. let x represent the number of adult tickets purchased and y represent the number of child tickets purchased. write an expression to represent the total cost of the tickets antonio purchased.

a.) $29.35y + $17.45x
b.) $29.35x + $17.45y
c.) ($29.35 + $17.45)(x + y)
d.) ($29.35 - $17.45)(x + y)

step-by-step explanation:

to determine whether a given function is even, we simply substitute x with -x in the expression. if the result after simplification is identical to the original equation, then the function is said to be even other wise odd.

f(-x) = (-x)^2 - (-x) + 8

      = x^2 + x +8

the resulting function is not identical to the original one;

f(-x) ≠ f(x)

therefore, f(x) is not an even function

8 < i think

hope this !

the answer is  

d.

21

i did this one. so you should get it right.