A] The expression of the number of $20 will found as follows:
given that the number of $10 is x,
The total number of denominations is 22, then the number of $20 will be given by the equation:
22-x
b] The total number of each denomination will be evaluated as follows:
total amount of money will be given by the equation:
10*x+20(22-x)=300
solving for x:
10x+440-20x=300
10x-20x=300-440
-10x=-140
thus
x=-140/(-10)
x=14
thus the number of $10 denominations was 14 and the number of $20 denominations was 22-14=8
X=-15 because you have to add 3 on both sides
Answer:
f(x) = - 2x - 1
Step-by-step explanation:
Let the linear function f(x) is given by f(x) = ax + b where a and b are unknown constants.
Given that f(0) = -1 and f(2) = -5
Hence, a(0) + b = - 1, ⇒ b = - 1
Again from the condition given
a(2) + b = -5, ⇒ 2a - 1 = - 5, ⇒ 2a = - 4, ⇒ a = - 2.
Therefore, the linear function is f(x) = - 2x - 1 (Answer)
Hi there!
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I believe your answer is:
C) x = 16
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Here’s why:
- We will use inverse operations to solve for 'x'.
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Hope this helps you. I apologize if it’s incorrect.
