Taking f(X) to be y
Y = 11 - 3X
3X = 11 - y
X = (11-y)÷3
F^-1(x) = (11 - x)÷3 addING both equations
It gives = 0
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Answer:
9(7p) is the expression.
Step-by-step explanation:
Let's multiply 7p and 9 to get product,
→ 7p × 9
→ 9(7p)
So, the product is 9(7p).
Answer:
x = -6
Step-by-step explanation:
10x = 6x - 24
Subtract 6x from both sides.
4x = -24
Divide both sides by 4.
x = -6
Invested at 7%: s
Invested at 5.5%: f
Then s+f=$15000, or f= $15000-s
Then add together the 2 interest amounts:
i = s(0.07) at 7%
i = f(0.055) at 5.5%
Then 0.07s + (15000-s)(0.055) = $952.50
Solve this for s, the amt. invested at 7%:
0.07s + 15000(0.055) - 0.055s = 952.50
Combining the s terms,
0.015s = 952.50-825
952.50-825
Then s = ------------------- = 8500
0.015
Ruth invests $8500 at 7% and $6500 at 5.5%.
<em>(</em><em>A</em><em>)</em><em>2</em><em>8</em><em>4</em><em> </em><em>S</em><em>Q</em><em>U</em><em>A</em><em>R</em><em>E</em><em> </em><em>I</em><em>N</em><em>C</em><em>H</em><em>E</em><em>S</em><em> </em><em>I</em><em>S</em><em> </em><em>T</em><em>H</em><em>E</em><em> </em><em>S</em><em>U</em><em>R</em><em>F</em><em>A</em><em>C</em><em>E</em>
