3(4+5)
3 x 4 = 12
3 x 5 = 15
15+12 = 27
5x + 3 = 18
5x + 3 = 18
5x = 15
x=3
3e + e = 12 - 20
4e = -8
e = -2
At Gym A, there is a $12 sign up fee and after that it is $20 per class every month. At Gym B, there is a $4 sign up fee and after that it is $22 per class every month. What is an equation we could use to solve for when the two gyms would be the same cost?
A. 20 + 12m = 22 + 4m
B. 20m + 12 = 22m + 4
C. 4m + 12 = 20 + 22m
B.
2w - 14 = 4w - 28
2w = 4w - 14
-2w = -14
w = 7
(x + 2)5
5*x = 5x
5*2 = 10
Answer: 5x + 10
-v - 9 = 12
-v - 9 = 12
-v = 21
v = -21
3 (d - 9) = 63
3d - 27 = 63
3d = 90
d = 30
Red Bird Cruises charges $85 per day with a one time fee of $75. King Cruises charges $100 per day with a one time fee of $30. What is an equation we could use to solve for when the cruises would cost the same?
A. 10d = 70d
B. 75d + 85 = 30d + 100
C. 85d + 75 = 100d + 30
C.
-29 + 3r = 7r + 3
3r = 7r + 32
-4r = 32
r = -8
7(a-2) = 14
7*a = 7a
7*-2 = -14
7a - 14 = 14
7a = 28
a = 4
8b * 4 = 32
8b * 4 = 32
8b = 8
b = 1
4(m-15) = 2(2+10)
4m - 60 = 4 + 20
4m - 60 = 24
4m = 84
m = 21
1.25m + 80 = 6.25m
12k + 8 = 3k + 116
9k + 8 = 116
9k = 108
k = 12
4(f-3) = 20
4f-12=20
4f=32
f=8
(z - 6) / 5 = 7
z - 6 = 35
z = 41
2 (10-2x) = 4(2x+2)
20 - 4x = 8x + 8
20 = 12x + 8
12 = 12x
1 = x
UPS charges $7 for the first pound and $0.20 for each additional pound. FedEx charges $5 for the first pound and $0.30 for each additional pound. Write an equation to solve for how many pounds would a package have to weigh to cost the same at UPS and FedEx.
7 + 0.20p = 5 + 0.30p
15 + 6x = 45 + 8x
15 = 45 + 2x
-30 = 2x
-15 = x