Answer:
Then the solution is (-1/4, 3)
Step-by-step explanation:
Start by eliminating the fractional coefficient 1/4: multiply all 3 terms in the second equation by 4. This results in equation (b), below:
4x - 3y = -10 (a)
4x = y -4 (b)
Substitute y - 4 for 4x in equation (a):
y - 4 - 3y = -10
Combining like terms, we get -2y = -10 + 4, or -2y = -6, or y = 3.
Since x = (1/4)y - 1, if y = 3, then x = (1/4)(3) - 1, or x = 3/4 - 1, or x = -1/4
Then the solution is (-1/4, 3)
18-4.25=13.75 the original minus what she already spent
13.75-9.75=4 that minus what she has to save
.50x=4 where x=the number of packages
divide both sides by .50
x=8 Fiona can buy 8 packages of crackers
Hope that helps.
Answer:
B
Step-by-step explanation:
6 times 50 = 300
6 times 2 = 12
300 + 12 = 312
6 times 52 = 312
21 french fries/50 total = x french fries/350 total
Cross Multiply: (21 · 350) = (50 · x)
Divide both sides by 50: (21 · 7) = x
147 = x
Answer: 147 students
