Answer:
B
Step-by-step explanation:
x + 3y = 7 → (1)
3x + 2y = 0 → (2)
Multiplying (1) by - 3 and adding to (2) will eliminate x
- 3x - 9y = - 21 → (3)
Add (2) and (3) term by term to eliminate x
0 - 7y = - 21
- 7y = - 21 ( divide both sides by - 7 )
y = 3
Substitute y = 3 into either of the 2 equations and solve for x
Substituting into (1)
x + 3(3) = 7
x + 9 = 7 ( subtract 9 from both sides )
x = - 2
solution is (- 2, 3 ) → B
7*122 = 854
5*68 = 340
854 + 340 = 1294, closest to 1200.
Answer B is correct.
Answer:
Step-by-step explanation:
y - 2 = -8(x + 3)
y - 2 -8x - 24
y = -8x - 22
10% raise
hmm
find his amount earned first
15.5 per hour
15.5 times 35=542.5
10% more is times 1.10
542.5 times 1.10=596.75
5% is deducted for tax
100-5=95
596.75 times 0.95=566.9125
now add 200
766.9125
round
$766.91 is his check
