You need a 30% alcohol solution. on hand, you have a 90 ml of a 45% alcohol mixture. how much pure water will you need to add to obtain the desired solution?
you will need
ml of pure water
to obtain
ml of the desired 30% solution.

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

you just switch the numbers basically so it would be 3/17

b. f(x) = –√x + 3this is the correct answer

4+3x is the answer

hope you got it