Given the function f(x) = 3x2 – 5x + 10, find f(4).
A) f(4) = 18
B) f(4) = 38
C) f(4) = 58
D) f(4) = 72

B

Step-by-step explanation:

f(x) = 3x² - 5x + 10

f(4) = 3*4² - 5*4 +10

     = 3*16 - 20 +10

    = 48 - 20 + 10

   f(4) = 38

answer: the price of one pound cabbage = $ 0.8

the point (10,8) represents that the cost of 10 pounds cabbage is $ 8

step-by-step explanation:

since, here is a proportional relation between the number of pounds of cabbage (x) and the price in dollars (y).

therefore, we can write,

⇒ y = k x

where k is the constant of proportionality.

now, point (5,4) is in the line.

thus, it will satisfies the above equation of line.

⇒ 4 = 5 k

⇒ k = 0.8

thus, the equation of the line is,

y = 0.8 x

a) for x = 1,

y = 0.8

therefore, the cost of one pound of cabbage is 0.8 dollars.

b) in the below graph (10,8) represents that the cost of 10 pounds of cabbage is 8 dollars.

maya’s expression will generate the wrong sum because she violated the commutative property.

step-by-step explanation: