Y= hx + ex ) x is the number of days jada has worked
top left
is not
Step-by-step explanation:
Answer:

Step-by-step explanation:
To find: The sum of
and opposite of 
Opposite of
means taking the opposite sign.
is positive. So, opposite sign is
.
Therefore, the addition is given as:

Opening the parenthesis, we get:

Now, as per PEDMAS rule, we subtract
, we get

Now, we are left with 
Subtracting a bigger number from a smaller number will give a negative answer.
So, 
Therefore, the final answer is 
Answer:
(64,86.5)
Step-by-step explanation:
find the case where he gets 70 and the case where he gets 79
if his average is 70:
(75+62+85+2x)/5=70
(222+2x)/5=70
222+2x=350
2x=128
x=64
if his average is 79:
(75+62+85+2x)/5=79
(222+2x)/5=79
222+2x=395
222+2x=395
2x=173
x=86.5