Planet A : Planet B
100 : 3
(x 41) (x 41)
4100 : 123
Answer: The elephant that will weigh

in Planet B.
A. f(x) = 7 + 0.3x
Just re-read your question! Hope I helped!
So I think you should set up an equation like this: 14.95x+16.88y=131.18 , x+y=8
so x=8-y, plug this into the original equation:
14.95(8-y)+16.88y=131.18
Evaluate: 119.60-14.95y+16.88y=131.18
Combine like terms: 119.60+1.93y=131.18
Subtract 119.60 from both sides. You get: 1.93y=11.58
Divide both sides by 1.93. You get y=6
Plug into second equation: x+y=8 ---> x+6=8 and solve for x. x=2
Christine bought 2 video games and 6 CDs. 14.95(2)+16.88(6)=131.18
4x - 3y = 51, when x = 15
Plug in 15 for x.
4(15) - 3y = 51
Simplify.
60 - 3y = 51
Subtract 60 from both sides.
-3y = 51 - 60
Simplify.
-3y = -9
Divide both sides by -3.
y = -9/-3
Simplify.
y = 3
~Hope I helped!~
Answer:
9÷5=9/5
Step-by-step explanation: