Please help I need the answer with the explanation now
Thank you:)

1) x+2x+x+3 = 23

4x+3=23

4x=20

x=5

2) a_ radius × radius × pi = the area

4×4×3= 48

b_ diameter × pi= the circumfrence

8×3 = 24

3) a) 34_10=24

24÷3=8

b) _24_(_48)= 24

4) a) 2x=9_5

2x=4 => x=2

b)X/3 =12

x= 36

5) x. _2.

y. 3_(_2)=5

x. 0

y. 3_0=3

x. 3

y. 3_3=0

i put them here too

answer is

c) 4

step-by-step explanation: