( 7x + 3y = 56 ) × 2
14x + 6y = 112
6x + 6y = 72
__________ -
8x = 40
x = 5
Answer:
each week he works 57.76 hours
Step-by-step explanation:
Answer:
16.5
Step-by-step explanation:
Just put in the values of C and y first into the expression.
C = 4x + 5y
Put in values.
51 = 4x + 5(-3)
Evaluate.
51 = 4x + (-15)
Swap positions.
4x + (-15) = 51
Shift (-15) to the other side and change to (+15).
4x = 51 + 15
= 66
Find x.
x = 66 ÷ 4
x = 16.5
H ( - 5 ) = 2 ( - 5 ) - 1
h ( - 5 ) = - 10 - 1
h ( - 5 ) = - 11