Hello from MrBillDoesMath!
Answer:
The first choice, y = x^3 + 5
Discussion:
Let
y = (x-5) ^ (1/3)
To find the inverse, sway x and y and then solve for y:
x = ( y - 5 )^(1/3) => cube both sides
x^3 = y - 5 => add 5 to both sides
x^3 + 5 = y
So the inverse is x^3 + 5, which is the first choice
Thank you,
MrB
Answer:
Step-by-step explanation:
An 80 watt incandescent light bulb is operated for 15 hours. This means that the number of watt hour hours used is 80×15 = 1200 kilo watt hour.
A 15 watt fluorescent light bulb is operated for the same period of time. This means that the number of watt hour hours used is 15 ×15 = 225 kilo watt hour.
At 10 cents per kWh, the total cost of 1200 kilo watt hour would be 1200×10 = 12000 cents = $120
At 10 cents per kWh, the total cost of 225 kilo watt hour would be 225×10 = 2250 cents = $22.5
The cost savings in using the fluorescent bulb would be 120 - 22.5 =$ 97.5
Answer:
David should pack 12 apples and 4 bananas
Answer:
Below in bold.
Step-by-step explanation:
24 ÷ [ 33- (1+2)^2]
= 24 / ( 33 - 3^2)
= 24 / 24 = 1.
21 + 3 (2-2^2)
= 21 + 3(2 - 4)
= 21 + 3 * -2
= 21 - 6
= 15.
[(14+√4)÷2^3] - 14
= [ (14 + 2) / 8] - 14
= 16/8 - 14
= 2 - 14
= -12.
20 + [18÷(4+1)] - (3^2 + 2)
= 20 + [18÷ 5] - (9 + 2)
= 20 + 3.6 - 11
= 23.6 - 11
= 12.6.