Anna got 45 answers correctly out of an unknown number of questions which was 90% correct. How many questions were there?*
5 or
55 or
60

The answer for this problem would be 50.

Step-by-step explanation:

If you calculate 90% of 50, you should get 45 so, the answer is 50.

4444444444444 i think

step-by-step explanation:

let

we know that

the y-intercept is the y-coordinate of the point when the value of x is equal to zero

so

the y-coordinate of the point a is the y-intercept

the answer part a) is

the value of y-intercept is

part b) find the slope m

we know that

the value of the slope is equal to

substitute the values

therefore

the answer part b) is

the value of the slope is equal to

the general answer is

the slope is

the value of y-intercept is