Selena is planning a birthday party for her little sister at a local zoo. The price depends on the number of children that attend the party. The price per child is normally $5. However, if there are more than 12 children in a group, the group can pay an $18 fee plus $2 per child. Which piecewise-defined function best models the cost of the party c(x) if Selena invites x children?

5x+10 is the correct one

hope this

the largest number of the four options is 1.8 x 10-2

you have it in scientific notation.

1.80 x 10-6   = 0.00000180

1.80 x 10-4   = 0.000180 (bigger, or "less small", than the former one)

so

1.8 x 10-2       = 0.0180. as you see. the "less small", or the biggest one of them all.

as you have negative exponent, it means you are dividing 1.8 by 100 (i.e. moving the dot towards left, two times).

if you had positive exponent for the scientific notation, power of tenths, you would be multiplying times 100 (moving the dot towards right) as below:

1.8 x (10)2 = 180

so. if you have negative exponent in scientific notation, move the dot toward left. if it is positive, toward right as many times the exponent tells you.

6x = 48

i hope this . 6 cards each and a total of $48. dvide each side by 6 and you will have your answer.

answer is  

c.

36

step-by-step explanation: