Answer:
C. f(x) = 40(1/4)^x
Step-by-step explanation:
Check all the options:
When x = 0
A. f(x) = 1/4(40)^x
f(x) = 1/4(40)^0
f(x) = 1/4(1)
f(x) = 1/4
When x = 0
B. f(x) = 1/2(40)^x
= 1/2(40)^0
= 1/2(1)
f(x) = 1/2
When x = 0
C. f(x) = 40(1/4)^x
= 40(1/4)^0
= 40(1)
= 40
When x = 0
D. f(x) = 4(1/3)^x
= 4(1/3)^0
= 4(1)
= 4
B.The quadratic formula is a good method because this quadratic equation cannot be easily factored.
you just have to get 2 over to the left side of the equation.
Answer: x=r^2
+
10
r
+
25
Answer:
y=-1/28
Step-by-step explanation:
y=1/2(-14)
y=1/-28
Answer: Slope: 2/3
y-intercept: 9
Step-by-step explanation:
