Which expression is equivalent to 4x(2x+3)-5x

Step-by-step explanation:

4x(2x+3)-5x

4x(8x+3)-5x

8x+12x-5x

8x+12x=20x

20x+-5x=15x

I really hope this helps plz let me know if its wrong! Im sorry if it is!

Step-by-step explanation:

let's convert the statement into equation..

let the charge of 1st mechanic be x and second be y..

by the question..

10x+5y=750...(i)

x+y=105..(ii)

from eqn(ii)..

x+y=105

or, x=105-y...(iii)

substituting the value of x in eqn (i)..

10x+5y=750

or, 10(105-y)+5y=750

or, 1050-10y+5y=750

or, 1050-750=5y

or, y=300/5

•°• y=60

substituting the value of y in eqn(iii).

x=105-y

or, x=105-60

•°• x= 45..

the rate charged by two mechanics per hour was 60$ and 45$