The expression for the volume of the boxes is (2x+3)x(x)x(4x+1) .
the simplified expression for the volume is
8x2 + 9x + 3.
8x2 + 14x + 3.
8x3 + 9x2 + 3x.
8x3 + 14x2 + 3x.

ok then what happened.

explanation:

infrared radiation has wavelength in the range between 700 nm and 1 mm. lets' convert these values into scientific notation, keeping in mind that:

let's start from the lower value, we have:

(we moved the dot two places to the left, so we increased the exponent by 2 units, from -9 to -7)

the higher value is:

so, the range of wavelength of infrared radiation is:

the train arrives at 20: 27 hope i