Multiply: (3x + 2)(4x - 7)
1 answer:
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The number of stamps and the cost are illustrations of unit rates
40 stamps would cost $22
The cost of 15 postage stamps is $8.25
Start by calculating the unit rate of the stamps.
So, the number of stamps for $22 is calculated by dividing $22 by the unit rate.
So, we have:
Hence, 40 stamps would cost $22
Read more about unit rates at:
Answer:
0.75 sec
Step-by-step explanation:
we have the equation
------> equation A
------> equation B
Using a graphing tool
The solution of the system is the intersection point of both graphs
the intersection point is (0.75,370)
that means-------> For t=0.75 sec , d=370 ft
see the attached figure
