D) Picking up 12 kids for a party and then dropping 12 kids off at the pool
Answer:
see explanation
Step-by-step explanation:
(a)
Given y is directly proportional to x then the equation relating them is
y = kx ← k is the constant of proportion
To find k use the condition when x = 3, y = 18 , then
18 = 3k ( divide both sides by 3 )
6 = k
y = 6x ← equation of proportion
(b)
(i)
when x = 12 , then
y = 6 × 12 = 72
(ii)
when y = 42
42 = 6x ( divide both sides by 6 )
7 = x
Y=z/x
for the second case y₁=(z/3)/3x =(z/x)*(1/9) =y/9
thus answer is A
Answer:
13,500.00 yearly is the raise + 90000.00 original salary= 103500.00 a year
