you can round 15 to 20 and 8 and to 10

Answer: $1.99

Step-by-step explanation:

PART A: Cost Of Item/ Number of units of measure

Part B: 10 Pound Tube.

Part C: $19.90 / 10 Lb Tube = $1.99

The Unit cost for the ground beef is $1,99

**Answer: 2.6**

**Step-by-step explanation:**

a^2 + b^2 = c^2

3^2 + b^2 = 4^2

9 + b^2 = 16

b^2 = 7

b = 2.6

we know that

A linear pair is a pair of adjacent, supplementary angles. Adjacent means next to each other, and supplementary means that the measures of the two angles add up to equal degrees

So

**case a) **∠SRT and ∠TRV

∠∠°----> by supplementary angles

therefore

**∠SRT and ∠TRV is a linear pair**

**case b) **∠SRT and ∠TRU

∠∠°----> are not supplementary angles

therefore

**∠SRT and ∠TRU is not a linear pair**

**case c)** ∠VRW and ∠WRS

∠∠°----> by supplementary angles

therefore

**∠VRW and ∠WRS is a linear pair**

**case d)** ∠VRU and ∠URS

∠∠°----> by supplementary angles

therefore

**∠VRU and ∠URS is a linear pair**

**case e)** ∠URW and ∠WRS

∠∠°----> are not supplementary angles

therefore

**∠URW and ∠WRS is not a linear pair**

The answer would be 78. C