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X greater than or equal to -7
Answer:
f(x)=5000(1+0.05)^x
Step-by-step explanation:
Use the formula: f(x)=P(1+b)^x
P is principal or y-intercept. 5000 is principal.
b is the percentage in decimal form. 0.05 is b.
x is time, in this case years. Since there is not a certain number of years leave x as x.
f(x)=5000(1+0.05)^x
Hope this helps!
If not, I am sorry.
Answer:
Step-by-step explanation:
9
Answer:
12 hits
Step-by-step explanation:
Let x be the number of hits needed
1 hit equals an at-bat.
(45+x)hits / (130+x)at-bats = 0.4
(45+x) = 0.4(130+x)
45 + x = 52 + 0.4x
45 - 52 = 0.4x - x
-7 = -0.6x
x = -7/-0.6
x = 11.667
x = 12(approximately)
12 hits are necessary since there are no fraction of hits