To solve both of these expressions, we want to add or subtract from left to right.
For the first one, we can rewrite it as:
8-6-9
=2-9
=-7
The second one we can rewrite as:
5-7+9+8-4
=-2+9+8-4
=7+8-4
=15-4
=11
Answer:
How many items did Bob produce last week? 32 items.
Step-by-step explanation:
(1) Last week Bob was paid total of $480 for the items that he produced that week.
(2) This week Bob produced 2 items more than last week and was paid a total of $510 for the items that he produced this week.
a) Let's start with the simplest case: he produced 36 or less items this week.
In this case he produced less than 36 items last week too.
So he was paid the same amount of dollar per item.
Using (1) and (2) assumptions we have:
$480+2X=$510
⇒2X=$510-$480
⇒2X=$30
⇒2X=$30/2
⇒X=$15
He was paid $15 per item.
Last week he was paid $480.
480/15= 32 items.
This week he was paid $510.
510/15=34 items.
The other cases has no solutions.
Answer/Step-by-step explanation:
1. 
; 3
Let's solve for a.
(subtraction property of equality)
(division property of equality)
Therefore, 3 is a solution to 9 = 2a + 3
2. 
; 7
(- × - = +)
(Subtraction property of equality)
(division property of equality)
Therefore, 7 is not a solution of
3. 
; 1
Therefore, 1 is a solution of .
Answer:
she will work forever
I don't know sorry i tried to answer it
Step-by-step explanation:
