It would take 6 
hours or 6.25 hours if John uses the 100 watt pump.
A gym membership is $100 sign-up fee and charges $20 a month thereafter. How much is the membership fee in a month?
1 answer:
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Answer:
Step-by-step explanation:
The graph that represents the function
f(x) = (x + 4)(x + 1)(x - 3)
crosses the x-axis three times: at x = -4, x = -1, and x = 3
because we apply the zero product rule and found the roots -4, -1, and 3
x+ 4= 0 → x = -4
x+1 = 0 → x = -1
x-3 = 0 → x = 3
