Answer:
19.30
Step-by-step explanation:
if your finding the discounted price, you'd take 20% and turn it into .20 and then subtract 19.50 and .20
The midpoint is (0,2)
Hope this helps! (:
Answer:
12x + 16y
Step-by-step explanation:
Multiply 4 and 3x to get 12x.
Multiply 4 and 4y to get 16y.
The sign stays positive because 4 is positive, so we end up with 12x + 16y.
Answer:
21. d. 39
22. c. 20; 7
Step-by-step explanation:
21. This is straightforward evaluation of the function. Put the numbers 8 and -5 where x is in the function definition and do the arithmetic. Then find the difference of the results.
f(8) = 3·8 -2 = 22
f(-5) = 3·(-5) -2 = -17
f(8) - f(-5) = 22 - (-17) = 22 +17 = 39
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22. The first part is similar to 21—evaluate the function for x=2.
f(2) = 24 -2·2 = 24 -4
f(2) = 20
Note that this result is sufficient to allow you to choose the correct answer.
However, we can also do the second part. Find x for f(x) = 10
f(x) = 24 -2x
10 = 24 - 2x . . . . . . substitute 10 for f(x)
-14 = -2x . . . . . . . . . subtract 24 from both sides
7 = x . . . . . . . . . . . . . divide both sides by -2
Answer:
g = 1, 3
General Formulas and Concepts:
<u>Pre-Algebra</u>
<u>Algebra I</u>
- Terms/Coefficients
- Factoring
- Solving quadratics
Step-by-step explanation:
<u>Step 1: Define</u>
<em>Identify</em>
g² - 4g = -3
<u>Step 2: Solve for </u><em><u>g</u></em>
- [Addition Property of Equality] Add 3 on both sides: g² - 4g + 3 = 0
- Factor: (g - 1)(g - 3) = 0
- Solve: g = 1, 3
