15. Dan drove 512 miles in 8 hours. What was his average speed for the trip? Solve each equation for the given variable. 17) (A/B) - 8 = C/D solve for A #19) P = ( M+ N) / -5 solve for N 20. A large box shaped like a rectangular prism needs to be painted. a. Write a formula for the area A to paint in terms of length l, width w, and height h. b. Rewrite the formula to find l in terms of A, h, and w. c. If h is 36 in., w is 28 in. and A is 6112 in.2, what is the length of th

93.8

step-by-step explanation:

lets say, first number = x

second number = 3x+7

total = 49

(x)+(3x+7)= 49

4x+7 = 49

4x = 42

x = 42/4

x= 10.5

x= 10.5

3x+7 = 3(10.5)+7 = 93.8

hope this

total amount of money that he should pay if he has not used his duty free exemption is $98

step-by-step explanation:

given a united states citizen returning to the states declares the following items at the customs office: 3 shirts at $8.50 each 2 dresses at $27.50 each 1 pair of gold cuff links at $17.50 per pair. we have to find how much he pay

cost of 3 shirts if one cost at $8.50 is

cost of 2 dresses if one cost at $27.50 is  

cost of 1 pair of gold cuff at $17.50

so, total amount of money that he should pay if he has not used his duty free exemption is   $25.5+$55+$17.50=$98

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