Answer:
A.
B. 343 • 7^x
Step-by-step explanation:
if the base of two exponential number is same we add their powers up (only when multiplying)
7^3+7^x ➡7^3+x
the expansion of 7^3 = 343 so 343•7^x is also equivalent to the given expression.
Answer:
y=-1/2x+80
Step-by-step explanation:
Answer: 2700
Step-by-step explanation: Lets use the "Simple Interest" expression to find interest.
First, Convert 6% to a decimal, which is 0.06.
I, interest= 7500 x 0.06 x 6
7500 x 0.06 x 6 = 2700
Cheryl will earn $2700 interest.
Answer:
<em>f(g(x)) = 8x² + 18x - 8 </em>
Step-by-step explanation:
f(x) = 2x² - 5x - 15
g(x) = - 2x - 1
f(g(x)) = y
y = 2( - 2x - 1 )² - 5( - 2x - 1 ) - 15 =
2(4x² + 4x + 1) + 10x + 5 - 15 =
8x² + 8x + 2 + 10x + 5 - 15 =
<em>f(g(x)) = 8x² + 18x - 8</em>
Answer:
C. Four less than seven times quantity of a number plus twelve.
Step-by-step explanation:
We can see from the given expression that 4 is subtracted from 7(x+12). The term used to describe subtraction is less. So, it is 4 less than 7(x+12).
We can clearly see that the first term is x and x can take any value.
So the whole expression will be four less than seven times quantity of a number plus twelve.
Hence option C is the correct answer ..
