Answer:
x = 1
Step-by-step explanation:
0.5x-0.3=0.2
1. Multiply both sides by 10.
0.5x*10-0.3*10=0.2*10
2. Refine.
5x-3=2
3. Add 3 to both sides.
5x-3+3=2+3
4. Simplify.
5x=5
5. Divide both sides by 5.
5x/5=5/5
6. Simplify.
x=1
II. f(x) doubles for each increase of 1 in the x values. Thus, r must be 2, and so we our ar^1 = 6 from ( I ) above becomes f(x) = a*2^x. Applying the restriction ar^1 = 6 results in f(1) = a*2^1 = 6, or a = 3.
Then f(x) = ar^x becomes f(x) = 3*2^2 (Answer A)
Answer:
A. Yes
B. Yes
C. No
D. No
Step-by-step explanation:
A is a linear equation, because it has an x with no exponent
B is a linear equation, because it has an x with no exponent
C is not a linear equation, because the exponent is more than 1
D is not a linear equation, because the exponent is more than 1
Answer:
28
Step-by-step explanation:
54-26=28.