Judy and Ana are on the swim team. Judy burns 50 calories for every butterfly lap and
35 calories for every freestyle lap. This week,
she burned 2050 calories. Ana burns 45
calories for every butterfly lap and 40 calories
for every freestyle lap. This week, she burned
2100 calories.
How many butterfly laps did they each swim?

answer:   b

step-by-step explanation:

x2 = 16

x can not be a negative number because 16 is positive

the only answer would be positive 8  

an

y = 6x -3y -12

y +3y +12 = 6x

=> . x = { 2y / 3 +2 } this is equation of line in terms of x

=> . if line meets the x-axis the co-ordinates of meeting point would be ( x , 0 )

=> . x = 2 ( 0 ) / 3 + 2

=> . x = 2

so, the point is ( 2 , 0 )

its adding 5.5 each time

step-by-step explanation: