Ur not dumb!!! i graphed the line for u here. i suggest watching some khan academy videos for extra practice!
Answer: Variant C
Step-by-step explanation:
f(x) = 3x^2 − 4
For finding f(-2) just replace x with - 2 like this:
f(-2)=3*((-2))^2-4=3*4-4=12-4=8
A 120 watt light bulb uses about 0.1 kilowatt of electricity per hour.if electricity costs $0.20 per kilowatt hour.
Let's solve how much does it cost to have a bulb on
for an hour.
=> 120 watt = 0.1 kilowatt per hour which costs 0.20 per kilowatt per
=> 0.1 kilowatt per hour * 0.20 = 0.02 dollars in an hour.
Answer:
2/3
all you have to do is make 1 1/4 an improper fraction and then use the keep change flip method.
None of these are correct my calculations are 11 tons 2138 Ibs 28 oz
