Nina wants to download games for her video game console. older games costs 500 points and new releases cost 1500 points. nina has 15000 points to use. the equation 500a+1500b=15000, where a is the number of older games and b is the number of new releases, models the situation. how many older games can she download if she downloads three new games?

b = 3

500a + 1500(3) = 15000

500a + 4500 = 15000

500a = 10500

a = 21

She can buy 21 older games

i believe the answer is 68cm

step-by-step explanation:

i just took 34 x 2 because the space between v and y is the same as y to k.

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.