When you add 2 negatives you get a negative for example -5+-15= -20 when you add a positive to a negative it increases the number for example -20+7= -13. Hope this helps
At least means greater than or equal to.
10 × (15+b) ≥ 26
150+10b ≥ 26
10b ≥ -124
b ≥ -12.4
Answer:
a) 
b) 
c) 
d) 
Step-by-step explanation:
We know that the circle is increasing its radio from an initial state of r=0 cm, at a rate of 5 cm/s.
This can be expressed as:

a) Radius of the circle, r (in cm), in terms of the number of seconds, t since the circle started growing:

b) Area of the circle, A (in square cm), in terms of the circle's radius, r (in cm):

c) Circle's area, A (in square cm), in terms of the number of seconds, t, since the circle started growing:

d) Expanded form for the area A:

Answer:
Stefan spent 108.9$ and made 12.1$
Step-by-step explanation:
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take 10% of 121 and subtract it from 121 and you get the price he paid and made
Answer:
60
Step-by-step explanation:
5 cases of 12 can be written as 6 x 12, which equals 60.
6 x 12 = 60