Answer:
the answer is -3
Step-by-step explanation:
1. add the -4 to 10 (-10 + 4)
2. -6= 2a
3. divide both sides by 2
4. -3= a
hope this helps
By using change base formula which is :
log x to the base b = (log x)/(log b) to a new base
∴ log₄(x+3) = log (x+3) / log 4
and
log₂(2+x) = log (2+x) / log 2
∴ the correct answer is number one
See the attached figure.
So the problem wants to compute what could David should score in the fourth math test to ensure an average score of at least 90. So base on the score the possible total of the four score must be 360 to make their average of minimum of 90 so the answer would be letter B. X>93
5 is the correct answer hope I helped