Which equation could represent the relationship shown the scatter plot?
a. y= -2x + 12
b. y= 7/8x + 6
c. y= 2/3 x -7
d. y= 5x +1

Apatient is given 50 mg dose of medicine the medicines effectiveness decreases every hour at a constant rate of 40% what is the exponential decay function that models this scenario how much medicine will be left in the patients system after 2 hours

Complete the equation of the line through (−10,3) and (−8,−8). use exact numbers.

In a class, there are 12 girls. if the ratio of boys to girls is 5: 4 how many boys are there in the class