23 is the middle number from 12 to 34.
q = quarters
dimes is 3 plus 3times quarters
so 3q is 3 times quarters
so 3q+3 would be 3 times plus 3
equation is 3q+3
the value would be 10(3q+3)
D. 16.8 units
A radius is half of the diameter, so to get the answer all you need to do is multiply the length of the given radius by 2.
8.4x2= 16.8
21•3.14=65.94 the circumference is 65.94
5555555.5 × 2 = 11111111
Hope it helps!
