Ematics Investigation
Determine the value of k if g(x) = 4x+k is a tangent to f(x) = -x² +8x+20​

In a certain pentagon, the interior angles are a,b,c,d,e where a,b,c,d,e are integers strictly less than 180. ("strictly less than 180" means they are "less than and not equal to" 180.) if the median of the interior angles is 61 and there is only one mode, then what are the degree measures of all five angles?

Write the percent as a fraction or mixed number in simplest form. 0.8%

On which number line are -3 and its opposite shown