The total cost of 2 bracelets and 3 necklaces is $15.50.The total cost of 4 bracelets and 1 necklace is $13.50.Let b represent the cost of each bracelet and n represent the cost of each necklace. 2b+3n=15.50 4b+n=13.50

n= -2.5, b=11.5

Step-by-step explanation:

-4b-6n=-31

4b+n=13.50

7n = -17.50

n=-2.5

2b+3(-2.5) =15.50

2b-7.5=15.50

2b= 23

b=11.5

0.6

39mph

step-by-step explanation:

168

step-by-step explanation:

first off, we know that he drove 3.5 hours at a rate of 48 mph.

knowing that, we want to see how many miles he drove all-together.

in this case, we can just multiply 48 by 3.5.

48 * 3.5 = 168