All of these involve simple substitution. Just replace the variable with the actual value.
8z + 3 >>> 8(8) + 3 = 64 + 3 = 67
3(7+ x^2) >>> 3(7 + 2^2) = 3(7 + 4) = 3(11)=33
s - 5t + s^2 >>> 4 - 5(-1) + 4^2 = 4 + 5 + 16
Get the trend? I am not sure I get that last one, is it:
x - y*3^2?
Answer:
inches.
Step-by-step explanation:
The level of a lake was 8 inches below normal.
Now, it is given that the water level decreases 
inches in June and 
inches more in July.
Therefore, the new level of water with respect to the normal level will be
= - 8 - 1.25 - 2.375
= - 9.625 inches
= inches. (Answer)
Answer:
2
Step-by-step explanation:
Graph: look halfway between x= 4 and x=6, the point is on the line f(x)=2
Equation: (x-5) = (5-5) =0
anything times 0 is 0
0 +2=2
Answer:
X = 100
Step-by-step explanation:
X + 20 over 4 = 30
1/4x + 5 = 30
-5 -5
1/4x = 25
multiply both sides by 4
x = 100
(-4*3*2)^2 = (-24)^2 = 576
hope this will help you
