The table below shows function r, which represents the total cost of a field trip to the science museum, in dollars, if n students return permission slips to attend. which function represents the situation?

a.
r(n) = 15n + 55
b.
r(n) = 55n + 15
c.
r(n) = 30n - 20
d.
r(n) = 5n + 45

The answer has to be A) r(n) = 15n +55, as when n=0, r(n)=55 so the equation must end with +55.

A.

Step-by-step explanation

Since the value of n is given in the table as 0,5,15,30 and 35.So we will put the value of n in the given option starting from A.

Now putting the value of n as 0 in option A

we get

Now putting the value of n as 5 in option A

we get

Now putting the value of n as 15 in option A

we get

Now putting the value of n as 30 in option A

we get

Now putting the value of n as 35 in option A

we get

After seeing the results of each value we see that option A is matching with all the given values. So the correct answer is A.

this may not be at all, but i use the same website you're using for school, and if i'm stuck doing one of these i try to look for it on the section.

2(2x + 3) = -4 + 2(2x + 5)

4x + 6 = -4 + 4x + 10

4x + 6 = 4x + 6

4x - 6 + 6 = 4x - 6 + 6

4x = 4x

x = x

unlimited solutions.