Abasketball player made 12 out of 15 free throws she attempted. she wants to know how many consecutive free throws she would have to make to raise the percent of successful free throws to 85% a) write an equation to represent this situation b)solve the equation. how many consecutive free throws would she have to make to raise her percent to 85%? can someone ?

(12+x)/(15+x) = 85%(12+x)/(15+x) = 17/20240+20x=255+17xx = 5hence she needs to make 5 consecutive free throws

Ok here we go ..there are plenty of ways to solve such math problems but we will go for the smartest and easiest ..5x+2y=7  -2x+6y=9we rearrange them into the following ..by multiplying the 1st equation by 2 it becomes 10x + 4y = 14we rearrange it and so it becomes 10x = 14 - 4yas for the second equation we multiply it by 5 and rearrange it so it becomes as to the following ..-10x + 30y = 45rearranging so 10x = 30y -45now 10x equals both 14 - 4y and 30y -45so   14 - 4y = 30y -4531 = 26yy= 31/26 = 1.19 or around 1.2so by now we can calculate x easily as  -2x+6y=9so 2x = 6y -9 = 6 * 31/26 - 9 = -1.84  then x = - 0.92 or around -0.9best luck!