Sarah plans to sell homemade birdhouses at the local craft fair. she spent $90 on new tools and estimates that she spends $6 in materials for each birdhouse. which rational function models the average cost per birdhouse, y, in dollars of building x birdhouses?

Step-by-step explanation:

Let x represents the number of birdhouses and y be the  average cost per birdhouse (in dollars).

Since she spends $6 in materials for each birdhouse.

Therefore, the total material cost for x birdhouses (in dollars)=

Also, She spent $90 on new tools.

Therefore, the total cost for building x bird house(in dollars) =

Now, The average cost per birdhouse =

Hence, the rational function models the average cost per birdhouse:

answer: i don't understand it

step-by-step explanation: sorry

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.