Answer:
x = 1, y = -4
Step-by-step explanation:
7х + 2y = -1 ------ eq1
3х — 4y = 19 ------ eq2
multiply eq1 by 2
2 x (7х + 2y = -1)
14x + 4y = -2 -----eq3
by elimination, add equation 2 and 3
14x + 3x = 19-2
17x = 17 (divide both sides by 17)
x = 1 (answer)
substitute into eq1
7(1) + 2y = -1 (subtract 7 from both sides)
2y = -1 -7
2y = -8 (divide both sides by 2)
y = -8/2 = -4 (answer)
Rate per hour = 6.8
Hours worked = 4
Ot= 1.5
$6.8 x 1.5 = $10.20
$10.20 x 4 hrs = $40.80
You will receive $40.80 ot pay
This would be a proportion:
7 4*7
---- , ------- NOTICE THAT 4 IS THE MULTIPLIER IN BOTH CASES
16 4*8
BUT
7 4*7
---- , ------- WOULD NOT BE A PROPORTION. 4 AND 10 ARE DIFFERENT
16 10*8 MULTIPLIERS.
D + 6 = sum # of dogs and 6 cats
answer
B. d+ 6
