I do believe it's 273,972 years.
Let total number of questions be x.
If she answered 85% correctly, than that means she answered 15% incorrectly.
You can set up the equation 15% (0.15) of total number of questions (x) equals 6.
0.15*x = 6
x = 40
There were 40 questions on the test.
A. First, find the slope, which is -0.5, and then insert it into point-slope form, which is y-y1=m(x-x1), or y-1=-0.5(x+5). That's point-slope form.
B. First, distribute -0.5 to both terms in the parenthesis, to get y-1=-0.5x-2.5, and lastly add 1 to both sides to get the slope-intercept form of y=-0.5x-1.5
Step-by-step explanation:
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