Answer: Choice B
rose bush: $10, shrub: $4
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Work Shown:
x = cost for one rose bush
y = cost for one shrub
Rob's equation: 8x+5y = 100
Amy's equation: 8x+8y = 112
Subtract the equations straight down (match terms)
8x - 8x = 0x = 0, x terms go away
5y-8y = -3y
100-112 = -12
After those three subtractions, we end up with this new equation: -3y = -12
That equation solves to y = 4 when you divide both sides by -3
Use this value of y to find x
8x+5y = 100
8x+5(4) = 100 ... replace y with 4
8x+20 = 100
8x+20-20 = 100-20 .... subtract 20 from both sides
8x = 80
8x/8 = 80/8 ... divide both sides by 8
x = 10
We end up with x = 10 and y = 4 pairing up. The two equations, when graphed, cross at the location (10,4). One rose bush costs $10 and one shrub costs $4.
Answer:
c
Step-by-step explanation:
2=2=4
two is equal to two which makes 4
Answer:
69
Step-by-step explanation:
to find f(3), we'll have to substitute x with 3
therefore,
f(3) = 19 × 3 + 12
= 57 + 12
= 69
Answer:
Percent change from 15 to 18.
You need to divide the numbers, but which one goes on top?
You know the number increases from 15 to 18, so the percentage must be greater than 100%.
The only way to get a number greater than 100% is to put the larger number on top.
Therefore, the answer is 18/15 = 1.2
Multiply by 100 to get a %
1.2 * 100 = 120%
2. Calculate percentage change
from V1 = 5 to V2 = 8
ans= 60%
overall answer gain of 15 yards and 18 yards
