Mr. ryan bought 7 tickets to an ice show and spent a total of $43. adult tickets cost $9 and children tickets cost $4. how many tickets of each type did mr. ryan purchase?

3 adult and 4 child tickets

Step-by-step explanation:

Let a = number of adult tickets

Let c = number of child tickets

We know two things:

First, solve the first equation for c :

Then, substitute the result into the second equation for c :

Therefore, Mr. Ryan bought 3 adult tickets and 7 – 3 = 4 child tickets.

answer set (b) 0.5, 3/4 80% is in order from least to greatest.  

step-by-step explanation:

in order to compare rational numbers to each other, it is much easier if they are in the same form.   typically, the best form in which to evaluate rational numbers is in decimals.   in order to convert a percent to a decimal, you would divide the given percentage by 100.   you can also accomplish the conversion by moving the decimal point over two places to the left.   for example, the decimal value of 80% is 80/100, or 0.8.   in order to convert a fraction to a decimal, you need to divide the numerator by the denominator.   for example, 3/4 is 0.75.   so, for choice (b) 0.5 3/4 (0.75), 80% (0.8) is the only choice in which the numbers are in order from least to greatest.