This is going to sound really weird,,, In Alg. 1, completing the square was just factoring out so
x^2 + 10x - 11 = 0 and the answers would be (x = -10 or 1)
But in Alg. 2, completing the square become wa more complex so the answer to the above would be (x = 1 or -11)

Why has the equation changed?

2

Step-by-step explanation:

for the first question it would be the second answer for the second question it would be the third answer and for the third question it would be the first answer

step-by-step explanation:

answer: the value should be used for i in the formula of calculation the monthly payment , the interest rate per period is 0.85.

step-by-step explanation:

the given rate of interest i= 85%

in calculating the monthly payment for a loan with an interest rate compounded monthly, the value of the interest rate per period we use in the formula must be in decimal form.

to convert it in decimal, we divide it by 100, we get

hence, the value should be used for i in the formula of calculation the monthly payment , the interest rate per period is 0.85.