A) True
The domain of a quadratic function in standard form is always all real numbers, meaning you can substitute any real number for x. The range of a function is the set of all real values of y that you can get by plugging real numbers into x.
57.2 hours because you have to find how much of the battery the radio will use for one hour then you multiply the amount of battery the radio will use by 72 because there are 8 batteries times 9 volts which gives you 72 volts.
<u>Answer:</u>
Option A. 61.5 square feet
<u>Step-by-step explanation:</u>
To find the surface area of all the sides of this victory podium, we can calculate the surface are of each side and add them up:
Bottom = 7.5 x 1.5 = 11.25 square feet
Bottom front and back = 7.5 x 1.5 x 2 = 22.5 square feet
Top = 2.5 x 1.5 = 3.75 square feet
Top front and back = 2.5 x 1.5 x 2 = 7.5 square feet
Right and left top sides = 1.5 x 1.5 x 2 = 4.5 square feet
Right and left flat = 2.5 x 1.5 x 2 = 7.5 square feet
Right and left bottom sides = 1.5 x 1.5 x 2 = 4.5 square feet
By adding all these surface areas, we get the total surface area of the podium = 11.25 + 22.5 + 3.75 + 7.5 + 4.5 + 7.5 + 4.5 = 61.5 square feet
