Do it both side +5 . Then that 23 will be 28.so the question will be 4a=28.
then diveded by 4 both side.
A will be 7.
Your answer is "7"
28÷4=7 ^^
Answer:
dont scam people
Step-by-step explanation:
Answer:

Step-by-step explanation:

Differentiate:

Substitute
into
:

Therefore, 68 is the gradient of the tangent line at x=7:

when
, 


Answer:
(-2.2,-3)
Step-by-step explanation: