T=the amount of shirts
12t-20-8t=100
12t-8t=120
4t=120
t=30
So they must sell at least 30 shirts to make $100.
Answer:
Step-by-step explanation:
Y=2x is linear (also proportional) since it involves only the first power of x
2x^2 is not linear, due to the second power of x (x^2); it is quadratic
Y = 1/x is not linear, due to x being in the denominator.
Answer:
10/21
Step-by-step explanation:
5
7
+
2
3
=
5 × 3
7 × 3
+
2 × 7
3 × 7
=
15
21
+
14
21
=
15 + 14
21
=
29
21
=
1 8
21
Step-by-step explanation:
<5, 2> - <2, -3> = <5 - 2, 2 - (-3)> = <3, 5>
Answer:
She can make 4 pieces
Step-by-step explanation:
1/4 Of 5 1/2 ft is 1ft 4.5 inches
