Math help: An international food festival charges for admission and for each sample of food. Admission and 4 samples cost $ 6.75. Admission and 9 samples cost $ 11.75. Write a linear function rule to model the cost y for any number of samples x.
admission and 9 minus admission and 4 will give you the cost of 5 samples
11.75 - 6.75 = $ 5 for five samples <===== each sample costs $ 1
so for admission + 4 samples
6.75 = admission + 4
2.75 = admission
y = $ 2.75 + $1 (x)
y = $ 2.75 + $ x
y = 2.75 + x would be the cost 2.75 to get in....then $1 for each sample