if f(x)=3x-7 and g(x) = -2x^2+1, find f(3)-g(-1)
To find f(3)-g(-1), we need to plug in the values of 3 for x in f(x) and -1 for x in g(x) and then subtract the results.
Plugging in 3 for x in f(x) gives us:
f(3) = 3(3) - 7 = 9 - 7 = 2
Plugging in -1 for x in g(x) gives us:
g(-1) = -2(-1)^2 + 1 = -2(1) + 1 = -2 + 1 = -1
Now, we can subtract the results: f(3) - g(-1) = 2 - (-1) = 2 + 1 = 3
Therefore, f(3)-g(-1) is equal to 3.