Answer:
20
Step-by-step explanation:
Our expression:
2 * (18 + - 8)
Plus then minus (+ -) is the same as just minus ( - )
Some examples:
1 + (+ 1) = 2
1 + (- 1) = 0
1 - (+ 1) = 0
1 - (- 1) = 2
Thus, 18 + - 8 is the same as 18 - 8
2 * (18 + - 8) =
= 2 * (18 - 8) =
= 2* (10) =
= 2 * 10 =
= 20
Answer: 20
Answer: 22 + 8x ≤ 60
Step-by-step explanation: She has to spend 22 dollars on jeans, so $22 will be added to the initial amount. The <em>x </em>will be the number of t-shirts and then the cost of <em>x </em>t-shirts will be <em>8x</em>. Putting this into inequality form will result in <u>22 + 8x ≤ 60</u>
it is the last one im pretty sure
Answer:
$22.75
Step-by-step explanation:
C = $30.25 - ($0.25/min)x, where x is the number of minutes spent on calls
Here, 30 minutes of calls result in this amount of $ left on the card:
C(30) = $30.25 - ($0.25/min)(30 min) = $22.75
