Question

Which of the following expressions represents the verbal description below?

the product of 2 times x and the sum of 9 and 5 times the square of x

a. 2x(9 + 5x)2
b. 2x(9 + 5x2)
c. 2 - x(9 + 5x2)
d. 2 - 9x + 5x2

Answer 1

we know that

1) the product of
`2` times
`x` is equal to

`2x`

2) the sum of
`9` and
`5` times the square of x is equal to

`(9+5x^(2))`

then

3) the product of
`2` times
`x` and the sum of
`9` and
`5` times the square of x is equal to

`2x*(9+5x^(2))`

therefore

the answer is the option B

`2x*(9+5x^(2))`