Answer:
36 total muffins
Step-by-step explanation:
5*4=20
8*2=16
20+16=36
A could be 2 while B could be 3, so -2a+3b turns into -4+9, which equals 5.
From what I know you can't really solve a a single equation with two-variables so it's just a matter of trial and error.
Just try plugging in a small number like 2 for a just to try it and you get 8b^2=72.
Divide everything by 8 to isolate b and you get that b^2=9.
Square root everything and you'll find that b=3. This is just one possible combination, I'm sure there are many more but this is obviously the one that was intended to be found.
Now that we know that a=2 and b=3 just plug them into the equation.
-2(2)+3(3)=?
-4+9=?
5
Sorry about having to use this ^ symbol, the equation maker is not working.
Answer:
r=4
Step-by-step explanation:
15r-6r=36
9r=36
r=36/9
r=4
C. I used the app math way. it has been a lifesaver.
Answer:

60+4
Step-by-step explanation:
<em>Order of Operations</em>
<em>Parenthesis</em>
<em>Exponent</em>
<em>Multiply</em>
<em>Divide</em>
<em>Add</em>
<em>Subtract</em>
<em>First, do exponent.</em>
<em>
</em>
<em>Standard form of 64 is: 60+4</em>
<em>64 is the correct answer.</em>
<em>60+4 is the correct answer.</em>