Answer:
i want to say 28
Step-by-step explanation:
this is because 3 times 4 is 12 so i multiplied 7 by 4
If he goes to bed at 9:00 pm, and wakes up at 10:00 am he will have slept 13 hours.
Step-by-step explanation:
7. x^2 - 4x
a= 1
b= -4
c= 0
8. 2x^2 -3x +1
a= 2
b= -3
c= 1
9. 9x^2 - 4
a= 9
b= 0
c= -4
10. x^2 +12x +36
a= 1
b= 12
c= 36
11. x^2 -9x + 9
a= 1
b= -9
c= +9
12. - (x^2 + 10x + 25)
= -x^2 -10x - 25
a= -1
b= -10
c= -25
Answer:

Step-by-step explanation:
Let b = the amount invested in bonds
Then 7000 -b = the amount invested in stocks
0.05b = interest from bonds
0.08(7000 - b) = interest from stocks

Answer:
it Is a variable..............