By substituting x = 2 into the function, we have:
f(2) = 7(2) - 5
f(2) = 14 - 5
f(2) = 9
Therefore, the value of the function f(x) = 7x - 5 at x = 2 is 9.
Evaluate the function for x = 2: f(x) = 7x – 5 (1 point)
9
19
–9
–19
5 answers
Candy is on sale for $0.75 each. You have a coupon for $0.25 off your total purchase. Write a function rule for the cost of n pieces of candy.
(1 point)
C(n) = 0.25n – 0.75 C(n) = 0.75n – 0.25 C(n) = 1.0n
C(n) = 0.75n
(1 point)
C(n) = 0.25n – 0.75 C(n) = 0.75n – 0.25 C(n) = 1.0n
C(n) = 0.75n
The cost of n pieces of candy can be determined by multiplying the number of pieces (n) by the cost per piece, which is $0.75. Therefore, the function rule for the cost of n pieces of candy is:
C(n) = 0.75n
C(n) = 0.75n
The ordered pairs (0, 0), (2, 4), (4, 8), and (6, 12) represent a function. What is the rule for this function?
(1 point)
y = x +2 y = 3x y=x+4 y = 2x
(1 point)
y = x +2 y = 3x y=x+4 y = 2x
We can observe that the y-coordinate of each ordered pair is twice the x-coordinate. Therefore, the rule for this function is:
y = 2x
y = 2x