Part 1
<h3>Answer: 13</h3>
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Explanation:
We'll replace every copy of x with -3. Then use PEMDAS to simplify.
f(x) = -2x+7
f(-3) = -2(-3)+7
f(-3) = 6+7
f(-3) = 13
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Part 2
<h3>Answer: -11</h3>
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Explanation:
We work backwards in a sense compared to what part 1 did. Instead of finding f(x) based on x, we determine what x must be for a given f(x).
We'll replace f(x) with 29 and solve for x like so
f(x) = -2x+7
29 = -2x+7
-2x+7 = 29
-2x = 29-7
-2x = 22
x = 22/(-2)
x = -11
Note how if you replaced x with -11, we'd get,
f(x) = -2x+7
f(-11) = -2(-11)+7
f(-11) = 22+7
f(-11) = 29
which helps confirm we have the correct answer.
8x(4+z) and 32x+8z, = Not equivalent
9(g+h) and 9g+9h = Equivalent
Step-by-step explanation:
Answer:
D
Step-by-step explanation:
the ratio of rows to flowers is 1:4, so for every 1 row, there are 4 flowers. so the equation would be f = 4r. do you understand how I got to that?
Answer: 416 Portraits total.
Step-by-step explanation:
So this is actually a really simple question.
There a four cafeteria walls right? And if she puts 104 on each of them, it's a simple mathematical equation.
MATH:
4 x 104 = 416
Hope this helps!