1. Which of the following represents the area of a rectangle whose length is 5x − 3 and whose width is x + 7?
A. 5x^2 - 21
B. 5x^2 + 9x - 21
C. 5x^2 + 32x - 21
D. 5x^2 - 32x -21
2. Let f(x) = x − 3 and g(x) = x + 11. Find f(x) ⋅ g(x).
A. x^2 - 8x - 33
B. x^2 - 8x + 14
C. x^2 + 8x + 14
D. x^2 + 8x - 33
3. Let f(x) = x2 + 3x − 4 and g(x) = x + 5. Find f(x) ⋅ g(x).
A. x^3 + 3x^2 + 16x - 20
B. x^3 + 5x^2 + 14x - 20
C. x^3 + 8x^2 + 11x - 20
D. x^3 + 9x^2 + 19x - 20
4. The base ticket price for a football game is modeled by the function p(x) = 15x + 10, where x is the years since the team started playing football. Not included in each base ticket price is a service charge modeled by the function c(x) = 5x + 2. To find the total cost of a ticket, a fan should use what operation on the polynomials?
A. Addition
B. Subtraction
C. Multiplication
D. It cannot be determined
Answers
Answered by
6
Mark as Brainlist please
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libertybingham8:
Could you answer some advanced math questions?
i will try my best
Find the x-intercept(s) and y-intercept of the function.
f left parenthesis x right parenthesis equals 4 x minus 12
Select the correct choice below and fill in any answer boxes within your choice.
A.
The x-intercept(s) is/are xequals
nothing.
(Use a comma to separate answers as needed. Type an exact answer, using radicals as needed.)
B.
There is no x-intercept
f left parenthesis x right parenthesis equals 4 x minus 12
Select the correct choice below and fill in any answer boxes within your choice.
A.
The x-intercept(s) is/are xequals
nothing.
(Use a comma to separate answers as needed. Type an exact answer, using radicals as needed.)
B.
There is no x-intercept
sorry I accidently sent it without the full question
no bhai i know maths until 10th only bcoz my subject is bio...
related to 10 th you may ask any more questions
oh thanks anyway
ya welcome
Answered by
4
1) Area = Length × Width
(5x - 3) (x + 7) = 5x² - 3x + 35x - 21
5x² + 32x - 21
The answer is thus C
2) (x - 3)(x + 11) = x² - 3x + 11x - 33
x² + 8x - 33
The answer is thus D
3) (x² + 3x - 4)(x + 5)
= x³ + 3x² - 4x + 5x² + 15x - 20
= x³ + 8x² + 11x - 20
The answer is thus C
4) We get the total cost by addition.
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