Suppose that the function f(x)= 12x + 3 represents the number of cars that drive by in x minutes. How many cars will drive by in 7 minutes?(1 point)
Responses
87
252
22
36
To find the number of cars that will drive by in 7 minutes, we need to substitute x=7 into the function f(x)= 12x + 3.
f(7) = 12(7) + 3 = 84 + 3 = 87
Therefore, 87 cars will drive by in 7 minutes.
To find the number of cars that will drive by in 7 minutes, we can substitute the value of x into the function f(x) = 12x + 3.
So, for 7 minutes, we have f(7) = 12(7) + 3.
Now, we can simplify this expression by multiplying 12 and 7, and then adding 3:
f(7) = 84 + 3.
Calculating further, we get:
f(7) = 87.
Therefore, the number of cars that will drive by in 7 minutes is 87.