A varible represents the number u are looking for.
Example:
2x + 3x
15% of what number is 36
15% of 36=5.4
Answer: $300
Step-by-step explanation:
Mr. Calvin earned 
He spent 
on food i.e.
Remaining money = 
So, he saved $300 after expenses
Answer:
−21
Step-by-step explanation:
=12s5t−6t4−6s−21
Answer:
2⁵× 2ˣ = 256
x= 3
(1/3)² (1/3)ˣ = 1/729
x= 4
Step-by-step explanation:
2⁵× 2ˣ = 256
x= 3
use Product Rule: xᵃxᵇ=xᵃ⁺ᵇ
convert both sides to the same base.
2⁵⁺ˣ = 2⁸
cancel the base of 2 on both sides.
5+x=8
subtract 5 from both sides.
x=8-5
simplify 8-5 3.
x=3
(1/2)² (1/3)ˣ = 1/729
x = 4
use division distributive property: (x/y)ᵃ=xᵃ/yᵃ
i hope this helped i didn't feel like typing the rest out though lol :(
