Answer:
13
Step-by-step explanation:
a negative plus a negative makes a positive
Sqrt(80) = Sqrt(16) x sqrt(5)
= 4 x sqrt(5)
Answer:
-25-5x-5y
Step-by-step explanation:
Answer:
y = (5/4)2^x
Step-by-step explanation:
The function value increases by a factor of 40/10 = 4 when x increases by 2. The function can be written as ...
y = (reference value)·(growth factor)^((x -reference)/(change in x for growth factor))
y = 10·4^((x-3)/2) . . . . . . using point (3, 10) as a reference
This can be simplified to ...
y = 10·2^(x -3) = 10/8·2^x
y = (5/4)2^x