Step-by-step explanation:
6+3((4-2(4-7))
1. 6+3((2(4-7))
2. 6+3((2(*-3)
3. 6+3(-6)
4. 6+(3*-6)
5. 6+-18
6. -12
A number of bacteria after 30 hours is 480 bacteria.
The answer is 480 because originally the amount was 80. After 12 hours it doubled to 160. Then after 24 hours have passed, the amount doubled again. So now the amount is 320 bacteria. Then 6 hours passed (half of 12 hours) so then you add half of that amount (160) to 320. 320 plus 160 is 480. So the answer is 48
None
Two
Infinitely many
f(x) = 4x − 3
f(x) = 4x + 3
f(x) = 4(x + 3)
Answer:
f(x) = 4^x -3
Step-by-step explanation:
All of the listed functions are linear functions with a constant slope of 4. None of them goes through the point (0, -2).
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So, we assume that there is a missing exponentiation operator, and that these are supposed to be exponential functions. If the horizontal asymptote is -3, then there is only one answer choice that makes any sense:
f(x) = 4^x -3
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The minimum value of 4^z for any z will be near zero. In order to make it be near -3, 3 must be subtracted from the exponential term.
Answer: 80
Step-by-step explanation: The given formula is: P = I/rt. So, we'll plug in $20, 5%, and 5 years like this: P = 20/5%(5) (or for the 5%, you can put .05), you will get: 80. You can get that answer on your calculator as well.
Hope this helped :)