Olivia thoms sells surplus books to bookstores. she is paid a weekly commission of $1.50 each on the first 50 books she sells, $1.75 each on the next 100 books, and $2 on any books she sells over 150. last week she sold 225 books. what was her commission for the week?

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step-by-step explanation:

b.-4 units

all you   do is count how many times you move

answer: c

(2, -4)

goes 7 to the

(9, 4)

easy

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: