Answer and step-by-step explanation:
To find the answers, substitute the given values of x to the given function. Then simplify.
a. x = 1
f(x) = 2x + 1
f(1) = 2(1) + 1
f(1) = 2 + 1
f(1) = 3
b. x = -2
f(x) = 2x + 1
f(-2) = 2(-2) + 1
f(-2) = -4 + 1
f(-2) = -3
c. x = 1/2
f(x) = 2x + 1
f(1/2) = 2(1/2) + 1
f(1/2) = 1 + 1
f(1/2) = 2
d. x = a
f(x) = 2x + 1
f(a) = 2(a) + 1
f(a) = 2a + 1
e. x = a - b
f(x) = 2x + 1
f(a - b) = 2(a - b) + 1
f(a - b) = (2)(a) + (2)(-b) + 1
f(a - b) = 2a - 2b + 1
