On the last three evenings, christine received a total of 77 phone calls at the call center. the second evening, she received 2 times as many calls as the third evening. the first evening, she received 5 more calls than the third evening. how many phone calls did she receive each evening?

1st evening: 23

2nd evening: 36

3rd evening: 18

Step-by-step explanation:

Total: 77

2nd: 2 * 3rd evening

1st: 3rd evening + 5

Let x represent the 3rd evening.

77=(2*x)+(x+5)+x

x=18

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.