If x(a) = a2 + 2a + 1 and w(a) = 9a2 + 20a - 1, then what is x(a) + w(a)? been stuck

Step-by-step explanation:

In this question, we're solving for x(a) + w(a).

What this means is that we would be adding both expressions together.

Your expression should look like this:

Solve:

When you're done solving, you should get 10a²+22a.

This means that 10a²+22a would be the correct answer.

10a^2 + 22a

Step-by-step explanation:

x(a)+w(a) means to just add the expressions (a^2+2a+1) and (9a^2+20a-1) since that is what x(a) and w(a) equal and because of the + between them.

(a^2 + 2a + 1)

+ (9a^2 +20a - 1)

10a^2 +22a +0

Or just 10a^2 + 22a.

14.5%

Step-by-step explanation:

Use the number 100 as an example to find the single discount.

Take a 10% discount off of this:

100(0.9)

= 90

Take a 5% discount:

90(0.95)

= 85.5

So, after the successive discounts, $14.5 was discounted.

This means that the single discount is 14.5%.

So, the answer is 14.5%