Solve each of the following problems. Show all steps or your work clearly.

a) 24

b) -21.

Step-by-step explanation:

For question a), we first solve whatever is in the parenthesis, because of PEMDAS.

Our original equation was:

4 (6 + (-3)) + 3 (4)

We get rid of the parenthesis first. 6 + (-3) = 6 - 3 = 3, so we have:

4 (3) + 3 (4)

We can multiply, and then add.

12 + 12 = 24.

For question b), we once again start off with getting rid of the parenthesis. However, within the parenthesis, we still have to follow PEMDAS, meaning that we have to do the multiplication first and the subtraction after.

Thus we have:

-2 (6) + 3(-3)

We can multiply things out and then add.

-12 + -9

= -1 (12 + 9)

= -1 (21)

= -21.

the answer is d. 75%

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.