A) At a particular gas station, the cost of a gallon of gas, in dollars, is a function of its octane. Explain the meaning of f(87). b) When John is driving to school, the distance traveled, in miles, is a function of time, in minutes. Explain the meaning of s(26).
a) Choose the correct answer below.
A.
f(87) is f times 87-octane gasoline.
B.
87 is the cost, in dollars, of one gallon of f(87)-octane gasoline.
C.
f(87) is f times the cost of a gallon of gas, in dollars.
D.
f(87) is the cost, in dollars, of one gallon of 87-octane gasoline.

gaddgad

step-by-step explanation:

7/2

(decimal: 3.5)

welcome ; )

step-by-step explanation:

the polynomial is a perfect square trinomial of the form a^2-2ab+b^2:

option a. true

step-by-step explanation:

9x^2-12x+4

comparing with the form a^2-2ab+b^2

1.) a^2=9x^2

solving for a: square root both sides of the equation:

sqrt(a^2)=sqrt(9x^2)

a=sqrt(9) sqrt(x^2)

a=3x

2.) b^2=4

solving for b: square root both sides of the equation:

sqrt(b^2)=sqrt(4)

b=2

to be a perfet square trinomial 2ab must be equal to 12x. let's check:

2ab = 2 (3x) (2)

2ab = 12x

correct

answer: -10

step-by-step explanation:

s(t) = 1 - 10t

s(x) = 1 - 10x

s(x + h) = 1 - 10(x + h)

            = 1 - 10x - 10h

s(x + h) - s(x) = 1 - 10x - 10h - (1 - 10x)

                      = 1 - 10x - 10h - 1 + 10x

                      = -10h

= -10