In february, alec had 1,538 visitors to his website. in march, he had 1,315 visitors to his website. what is the percentage decrease of the number of visitors to alec's website from february to march? if necessary, round to the nearest tenth of a percent

answer:

option (b) is correct.

b)

step-by-step explanation:

given

to prove the above stated formula we have to choose one of the identity from the given options .

since right side of above formula is which is same as , we will use the identity

we know   and

substitute above, we get,

thus, option (b) is correct.

answer:

y= -5x+2

step-by-step explanation:

y= mx+b where m represent the slope aka x intercept. b represent the initial value aka y intercept. hope it !

answer:

step-by-step explanation:

put x = 3 and y = 5 to the expressions 3x² - 2y and 2x² - 3y.

use pemdas:

p parentheses first

e exponents (ie powers and square roots, etc.)

md multiplication and division (left-to-right)

as addition and subtraction (left-to-right)

3x² - 2y

3 · 3² - 2 · 5 = 3 · 9 - 10 = 27 - 10 = 17

2x² - 3y

2 · 3² - 3 · 5 = 2 · 9 - 15 = 18 - 15 = 3

make the difference:

17 - 3 = 14