Answer:
12,599.1
Step-by-step explanation:
13,999 * 0.9 = 12,599.1
If one box contains 36 erasers than the second box would have 36 also. 36+36=72 if he gave 18 of that to his friends he would have 54 left. 72-18=54
"One more than" means something plus 1
+ 1
"Four times a number" means an unknown value multiplied by 4
4x
Final answer:
4x + 1
Hope this helps!
:)