Step-by-step explanation:
8x - 9y = 11
8x = 9y + 11
8x - 11 = 9y
y = 8x/9 - 11/9
so, C is correct
' 125% ' means ' 1.25 '
'of' means 'times'
1.25 times (last year) = $10.50
Divide each side
by 1.25: Last year = ($10.50) / 1.25
= $8.40 .
The answer should be approximately 0.4
Answer:
Kayla and Maddy will be in the same level in 4 days.
Step-by-step explanation:
Kayla: y = 6x + 12
Maddy: y = 2x + 28
6x + 12 = 2x + 28
Subtract 2x from both sides;
4x + 12 = 28
Subtract 12 from both sides;
4x = 16
Divide both sides by 4;
x = 4
