how many photos does she have?
(27⁽⁻ˣ⁺³⁾) (9⁽ˣ⁺¹⁾) = 81
Instead of using logarithmic to find x, Notice that 27, 9 and 81 are the perfect powers of 3. Since 27 = 3³, 9 = 3², and 81 = 3⁴, so
(3³⁽⁻ˣ⁺³⁾) (3²⁽ˣ⁺¹⁾) = 3⁴
3³⁽⁻ˣ⁺³⁾⁺²⁽ˣ⁺¹⁾ = 3⁴
If the bases are the same, then cancel it and bring the power as a new base.
3(-x+3) + 2(x+1) = 4
-3x + 9 + 2x + 2 = 4
-x + 11 = 4
-x = 4 - 11
-x = -7
x = 7
Step-by-step explanation:
2x-y=4 means y=2x-4. -> slope of the parallel line is 2.
so using pt slope form,
y+11=2(x+3)
y+11=2x+6
y=2x-5
Gail has $18.5
Jim has $8.5
first, subtract 27-10=17
next, divide 17/2=8.5
Check:
8.5+8.5 =17
17+10=27
i hope this answered you question
