Need help only on these two problems please

9514 1404 393

  3)  (x, y) = (-2, 8)

  5)  (x, y) = (-3, -7)

Step-by-step explanation:

3) The expression for y can be substituted into the other equation.

  4x +16 = 3x +14

  x = -2 . . . . . . . . . . subtract 3x+16 from both sides

  y = 3(-2) +14 = -6 +14 = 8

The solution is (x, y) = (-2, 8).

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5) Substitute for y in the first equation.

  -x +2(4x +5) = -11

  -x +8x +10 = -11

  7x = -21 . . . . . . . . . subtract 10

  x = -3 . . . . . . . . . . . divide by 7

  y = 4(-3) +5 = -12 +5 = -7

The solution is (x, y) = (-3, -7).

c. 4 1/4 pounds

62.5 paisa

step-by-step explanation:

4000*70 = 280000

280000-(2000*90) = 100000

4000-2400 = 1600

100000/1600 = 62.5

( give brainliest)