Your test grades are 70. 85. 95. 93 and 94. You have one more test and want an average of an 86. What must
you earn on your next test?

79

Step-by-step explanation:

Let last test score be y

Average = sum of test scores/ number of test scores.

Average was given in question = 86

86= 70+85+95+93+94+y/6

86= 437+y/6

Cross multiply

86*6 =437+y

516= 437+y

Collect like terms

516-437=y

Y=79

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.  

because they could drop even lower..