**Answer:**

Problem 1. Answer: D

Problem 2. Answer: A

Problem 3. Answer: C

Problem 4. Answer: D

**Step-by-step explanation:**

**Problem 1:**

A pack is targeted to weigh 9.25 oz.

A pack can be up to 0.23 oz off, either over or under weight.

The pack cannot weigh less than 9.25 oz - 0.23 oz or more than 9.25 oz + 0.23 oz.

The following compound inequality represents the rejected weights.

x < 9.25 - 0.23 or x > 9.25 + 0.23

Subtract 9.25 from both sides of both inequalities.

x - 9.25 < -0.23 or x - 9.25 > 0.23

Change to an absolute value inequality.

**|x - 9.25| > 0.23**

x - 9.25 < -0.23 or x - 9.25 > 0.23

**x < 9.02 or x > 9.48**

**Problem 2:**

Almond trees produce 12a

Macadamia nut trees produce 8m

Yield is 250

**12a + 8m = 250**

**Problem 3:**

8.8 m/s converted into km/h

1000 m = 1 km

60 sec = 1 min

60 min = 1 hr

8.8 m/s * (1 km)/(1000 m) * (60 s)/(1 min) * (60 min)/(1 hr) =

= **31.68 km/h**

**Problem 4.**

Let number of alternative schools be a.

Let number of charter schools be c.

"the number of charter schools is 4 less than twice the number of alternative schools"

c = 2a - 4

There are 48 charter schools, so c = 48. Now we solve for a.

48 = 2a - 4

52 = 2a

a = **26**