**Answer:**

29.97 square feet

**Step-by-step explanation:**

Given

The length of rectangle = 9 ft

The width of rectangle = 40 in

We have to bring the length and width in same unit. As the area is required in square feet so we will convert width in feet

The width will be divided by 12 to be onverted into feet

So,

Width = 40/12 = 3.33 feet

Now

Area = Length * width

= 9 * 3.33

= **29.97 square feet .. **

**Answer:**

(f + g)(x) = **I2x + 1I + 1 ⇒ C**

**Step-by-step explanation:**

Let us solve the question

∵** f(x) = I2x + 1I + 3**

∵ **g(x) = -2**

→ We need to find (f + g)(x), which means add the two functions

∵** (f + g)(x) = f(x) + g(x)**

→ Substitute the right side of each function on the right side

∴ (f + g)(x) = I2x + 1I + 3 + (-2)

→ Remember (+)(-) = (-)

∴ (f + g)(x) = I2x + 1I + 3 - 2

→ Add the like terms in the right side

∵ (f + g)(x) = I2x + 1I + (3 - 2)

∴ **(f + g)(x) = I2x + 1I + 1**

There are i<span>Infinitely many solutions </span>

**Answer:**

(D)

**Step-by-step explanation:**

First, you have to graph the equation. Then you notice that it is a parabola facing downwards. This means that as the graph decreases on the left side, the x's become negative and the y's become negative. On the right side, the x's become positive and the y's become negative.