Answer:
9(s+3.00) + 4s
Step-by-step explanation:
For starters, we s as the basic cost of the shoe. If we buy 4 of those, than it's a simple 4s.
For the other 9 shoes, we have an additional cost of $3. So we will add 3 to s. Since we are buying 9 or those, we will multiple s + 3 by 9. Thus creating the equation above.
-3x - 4y - 2z = 0
x + 3y + 2z = 1
-2x - y = 1
-4x - 4y - 2z = 10
3x + 4y +2z= 0
-x = 10. x = -10
-2(-10) - y = 1
20 - y = 1
-y = -19
y = 19
-10 + 3(19) + 2z = 1
-10 + 57 + 2z = 1
47 + 2z = 1
2z = -46
z= -23
check: 2(-10)+2(19)-23=-5
-20+38-23=-5
-43+38=-5
-5=-5
The correct answer is the second option: plus or minus square root of 20
Hope this helped :)
Answer: B
explanation: B is the right answer because it passes the vertical line test while the others do not. the others would have more than one outcome for the same income, therefore it wouldn’t be a function