Just plug it into a calculator and you would get 400
He spends 30 to enter and 4 per ride
y = 4x + 30....with x being the number of rides and y being the total cost
F(x) means the function defined at that x value. It really just means what y value when x is equal to that input. So we can see clearly that A is false. They’re nearly opposite y values. B is also obviously false since the y values aren’t equal. C is the same case, the y values aren’t equal. D is true. When x = -2 for both functions, we can see the y value is the same. They also intercept, so that’s a pretty dead giveaway
D.)
The answer is:
(v-1)(v+1)(v^2+1)
36 of them did not have an umbrella because out of 11 people, 4 did not bring an umbrella.
