Jake made a total of 7 copies at a copy shop, with some being black-and-white copies and some being color copies. Black-and-white copies cost 8 cents, and color copies cost 15 cents. If Jake spent a total of 70 cents on copies, which
system of equations can be used to determine the number of black-and-white copies and the number of color copies he
made? Assume b is the number of black-and-white copies and c is the number of color copies.

b+c= 7
8b+ 15C = 70

b+c=7
15b+8C = 70

b+c= 70
8b+ 15 = 7

+C = 70
15b+8C = 7

d

step-by-step explanation:

d

arrange the equations with like terms in columns.

analyze the coefficients of x or y.

add the equations and solve for the remaining variable.

substitute the value into either equation and solve.

check the solution.

step-by-step explanation:

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 )

i dont know

step-by-step explanation:

umm. i dont know