Answer:
The correct answers are:
Question 4: the first step Keisha should take is: log to the power of x equals log 9.
Question 5: step 4 could be n ln 2 equals ln 86
Question 6: the exact solution is x=ln(7)
Step-by-step explanation:
Ok,
Question 4: the equation that shows the first step Keisha should take is:


(applying the properties of logarithms)

Solution: the first step Keisha should take is: log to the power of x equals log 9.
Question 5: Her first three steps are:

(adding 3 to both sides)



Solution: step 4 is:
(applying the properties of logarithms)
Question 6: The exact solution of 2 e to the power of x equals 14 is:

(dividing both sides by 2)

(ln(e)=1)

Solution: 
You will read for 45 minutes if your brother reads for 15 minutes.
<em><u>Explanation</u></em>
You decide to read 30 minutes longer than your brother reads.
If your brother reads
number of minutes, then 30 minutes longer than
minutes means
minutes.
As the number of minutes you read is
, so the equation will be: 
When your brother reads for 15 minutes, then we will just <u>plug
into the above equation</u>. So.....

So, you will read for 45 minutes if your brother reads for 15 minutes.
Answer:
q*2=14 hope that this helped
Step-by-step explanation:
since product commonly mean multiplication, then you would have to make sure that q is multiplied to 2 and then provide the actual "product" of your expression or you could also just put 2q.
Answer:
9
Step-by-step explanation:
<span>Answer:
MgF2 ====⇒ Mg+2 + 2F-
Ksp = [Mg+2][F-]^2
Let S = molar solubility of MgF2
[Mg+2] = S ; [F-] = 2s
Since the [F-] is initially 0.40 M, then [F-] = 0.40 + 2S
6.4 x 10^-9 = (S) (0.40 + 2S)^2 ; one can neglect the 2S in the 0.40 + 2S expression since it is very, very small compared to the 0.40 already present.
6.4 x 10^-9 = S(0.40)^2
S = 4.0 x 10^-8
Molar solubility = 4.0 x 10^-8</span>