91Ó°ÊÓ

Evaluate the expression.

$9â‹\dots 6+27÷3$

Use a number line to find the sum.

– 9 + 11

Find the sum.

7+ (– 9) + 15

Simplify

360 ÷ (– 36) ÷ (– 2)

Challenge: The point (a, b) is in Quadrant II of a coordinate plane. Describe the location of the point with the given coordinates.

$(\text{b,}  \text{a})$

Evaluate the expression when $x=4,\text{ a²Ô»å}y=3$

localid="1648722643340" $7(x^2−5y)$

Simplify

20 (– 45) ÷ (– 9)

The point (a, b) is in Quadrant II of a coordinate plane. Describe the location of the point with the given coordinates.

34. $(\text{b,}  \text{b})$

An aquarium has a square base with side length of 15 inches. You fill the aquarium with water to a height of 15 inches.

a) Find the volume of the water in the aquarium

b) A cubic inch of water weighs approximately 0.036 pound. Find the approximate weight of water in the aquarium.

Digital cameras capture images in rows and columns of pixels, which are small rectangular colored dots. The more pixels in a given space, the greater the detail of the image.

a. Calculate The total number of pixels in an image is the product of the number of pixels in a row and the number of pixels in a column. Your camera produces an image that has 1280 pixels in a row and 1024 pixels in a column. Find the total number of pixels.

b. A megapixel is 1,000,000 pixels. Find, to the nearest tenth, the number of megapixels in the image in part (a).

c. Let m be the number of megapixels in an image, and let l and w be the length and width in inches of a printed photo. A print is clear if the value of the expression$\frac{m}{lw}$is 0.017 or greater. Can you make a clear 8 inch by 10 inch print of the image in part (a)? Explain.