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

$2x*(9+5x^{2})$