Select the correct answer. This table gives sales data for an electronics store in any given month. It lists the probabilities of the number of items purchased in a single
transaction and the average amount spent per transaction
Number of Items
Average
Purchased in a probability Amount
Single Transaction
Spent
1
0.30 $80
2.
0.43 $70
3
0.12
$75
4 or more 0.15
$80
Based on the data provided, which type of transaction is likely to bring in the most income during a month?
OA a transaction with one item
B. a transaction with two items
О с.
a transaction with three items
D.
a transaction with four or more items
i

11.

that's the region less than 4 including 4 together with the region greater than 8 not including 8.

a compound inequality is two or more inequalities in a single statement connected with ands and ors.

"or" means d can satisfy either equality or both for it to be in the solution set; it's set union of the two inequality solutions sets.

12.

|3x+2| > 9

3x + 2 > 9 or 3x + 2 < -9

3x > 7 or 3x < -11

x > 7/3 or x < -11/3

that's two ranges as indicated with a gap which includes x=zero.

the first step is to replace the absolute value inequality with a compound inequality combining the two cases, absolute value of a negative number and absolute value of a positive number.

we can check the answer to assure it's correct. at x=7/3 we get 3x+2=9 as we expect and bigger than that we get a true inequality; good. at x=-11/3 we get 3x+2=-9 and smaller than that we get a true inequality; good. checked.

13.

pattern: each successive term is multiplied by -1/2

that's choice d

i checked it so i know it's correct.