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3 years ago

Answer correctly for brainliest

Mathematics

1 answer:

oee [108]3 years ago

6 0

f(x) = x^2 + 2x + 1

To find f(-7), all we need to do is plug in -7 everywhere there is an x. Then, we simplify to find our numeric answer.

f(-7) = (-7)^2 + 2(-7) + 1

= 49 - 14 + 1

= 35 + 1

= 36

f(-7) = 36

Hope this helps!! :)

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Answer:

-3 is a solution.

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Equality Properties

Multiplication Property of Equality
Division Property of Equality
Addition Property of Equality
Subtraction Property of Equality

Step-by-step explanation:

Step 1: Define

3 - 4r ≥ 15

Step 2: Solve for r

[Subtraction Property of Equality] Subtract 3 on both sides: -4r ≥ 12
[Division Property of Equality] Divide -4 on both sides: r ≤ -3

Step 3: Compare

Substitute in r: -3 ≤ -3

This is true. -3 is less than or equal to -3.

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