Step-by-step explanation:
=(x+2)(x+6)
=x²+6x+2x+12
=x²+8x+12
hope it helps..
Answer:
x = 4
Step-by-step explanation:
-
- divide both sides by 5
- 2x + 5 = 13 subtract 5 from both sides
- 2x = 8 divide both sides by 2
- x = 4
The function given is r(t) = 1 + 4t, where r is the radius in centimeters and t is time in seconds.
So, use the formula of the area: area = π (radius)^2
A(t) = π [r(t) ] ^2
A(t) = π [1 + 4t ]^2 = π [1 + 8t + 16t^2 ]
Answer: π [ 16t^2 + 8t + 1]