No, the first choice equals 190 and the second 144.
F(b)=7b+8
you just need to change the x variable. make y into f(x) or in this case f(b)
T=cost of one television
D= cost of one DVD player
2t+3d= 1421
D=t(1/2)
Replace d by t(1/2)
2t+3(t1/2)= 1421
3.5 t = 1421
T= 691.7 $
Good luck
Answer:
The answer is 7/24.
Step-by-step explanation:
I attached a picture, but I'll try to walk through it here.
1) A negative and a negative makes a positive, so h becomes positive.
2) I added 7/8 to both sides, in order to "isolate the variable", which simply means to get h by itself, on one side of the equation (you'll likely hear it said both ways).
3) I multiplied 7/8 by 3/3, and multiplied -7/12 by 2/2. This is known as a common denominator, which in this case is 24. You can only add and subtract fractions that have a common denominator.
4) Multiply both of the fractions to get 21/24 + (-14/24). "Adding a negative" is the same thing as subtracting.
5) 21 - 14 = 7, and since our denominators are the same, the answer is 7/24.
You can confirm the answer by substituting, or "plugging" 7/24 into your original equation, in place of h.
B = 2
B is basically whatever number the line passes through on the Y - Axis
