Answer:
Step-by-step explanation:
The question is 10b/(2b + 8)
The reciprocal will not make a minus sign. B and C are both wrong. Powers can create a minus sign but not this kind of question
Two terms creating a binomial must stay together. In this case (2b + 8) must be entirely in the top or bottom of the fraction. That makes D wrong.
Answer: A is the correct reciprocal.
Plug in -3 in the x.
4(2)(-3)= -24.
The factorised expression is 5(5c-1)
Using an exponential equation, it is found that it will be 7.3 years before the value is doubled.
The equation for an increasing <u>exponential function</u> is given by:

In which:
- A(0) is the initial amount.
- r is the growth rate, as a decimal.
In this problem:
- Gains 10% each year, thus
.
The doubling time is t for which
, then:







It will be 7.3 years before the value is doubled.
A similar problem is given at brainly.com/question/23008760
Answer:
Use an algebra calculator ;)
Step-by-step explanation:
it always works for me