Alaina was asked whether the following equation is an identity:
(20 + 1)2 – (2 + 1)2 = 3(x + 1)2 – 1
She performed the following steps:
(2x + 1)2 – (3+1)
Step 1
= 4x2 + 4x + 1-2? + 2x + 1
Step2
= 3.2? + 6x + 2
Step 3
= 3x2 + 6x + 3-1
Step 4
= 3(z? +22+1)-1
Step5
= 3(x + 1)2 – 1

step-by-step explanation:

from the graph attached below:

domain of graph is the value of x for which the given function profit function p(x) is defined.

(a) the domain represents the number of years for which the outlet will earn a profit.

range of profit function defines the lowest to highest value of profit earned.

(b) the range of this function is (0 , 160 ). for this function, the range represents the outlet's profit earned.

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step-by-step explanation:

10.416 m/s

step-by-step explantion:

distance=100m

time= 9.6s

average speed=100/9.6

=10.416 m/s