The count is trying to choose his new 7-digit phone number. since he is picky about his numbers, he wants it to have the property that the digits are non-increasing when read from left to right. for example, 9973220 is a valid phone number, but 9876545 is not. how many choices for a new phone number does he have?

answer:

a=9

step-by-step explanation: lmk if you need a explanation

vertical=18cm horizontal=18cm hypotenuse=25.5

step-by-step explanation:

change of stock price/initial stock price on friday * total stock value = change of stock value

0.89/73.73 *x = 42.72

x=3539.04 = total stock value at initial stock price on friday .

total stock value at initial stock price on friday/ initial stock price on friday = number of shares

3539.04/73.73 = 48 shares

they own 48 shares of this stock

answer: hence, function will be

explanation:

since we have given that

cost of a new textbook = $85

according to question, the resale value of a textbook decreases by 25% with each previous owner,

so, our function becomes,

here, y is the total value of the text book after x owners.

hence, function will be