As it is given here
initial speed is
v_i = 6 m/s
After 4 seconds the final speed is
v_f = 14 m/s
so here we can use the formula of acceleration using kinematics
a = \frac{v_f - v_i}{t}
a = \frac{14 - 6}{4}
a = 2 m/s^2
so here it will accelerate at 2 m/s^2 rate.
The answer would be +3 since ur adding 3 every time
<span>f(x) = 2x + 3
</span><span>g(x) = x²-7
</span>(f+g)(x) = f(x) + g(x) = 2x + 3 + x² - 7 = x² + 2x - 4
(f+g)(x) = x² + 2x - 4
Step-by-step explanation:
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this is the link for explanation copy and paste it to see