Answer:
60$
Step-by-step explanation:
Shipping is 7.50 and the 7 items are 52.5 total
Answer:s=6
Step-by-step explanation:
3 ( s + 4) = 30
3s+12=30
3s=18
s=6
Answer:
-6
Step-by-step explanation:
3x + 9 = -9
3x = -18
x = -6
Answer:
5 seconds.
Step-by-step explanation:
Make an equation.
Time in air = x
Time in water = 12 - x
16x + 36 - 3x = 127
13x = 91
x = 7
12 - 7 = 5