Martina recieved a $80 gift card for a coffee store. she used it in buying some coffee that cost $8.37 per pound. after buying the coffee she had $29.78 left on her card how many pounds of coffee did she buy?

Total money = $80

Let x be the no of pounds

Cost of one pound = $8.37

Money spent = 80-29.78=50.22

But 8.37x is also the money spent

Implies

8.37x=50.22

X=50.22÷8.37=6 is the no of pounds

Step-by-step explanation:

80-29.78=50.22

50.22÷8.37

= 6

i dony know

step-by-step explanation:

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.