R=fixed rate
m=rate of miles
n= miless
T(n)=total amount per miles(n)
T (n) =mn+r
Y = abˣ
(a ≠ 0, b ≠ 0)
(1, 7.5)
x = 1
y = 7.5
↓
7.5 = ab
(3, 16.875)
x = 3
y = 16.875
↓
16.875 = ab³
7.5 = ab
b b
7.5/b = a
16.875 = ab³
b³ b³
16.875/b³ = a
7.5/b = 16.875/b³
7.5/b(b³) = 16.875/b³(b³)
7.5b² = 16.875
7.5 7.5
b² = 2.25
√(b²) = √(2.25)
b = 1.5
a = 7.5/b
a = 7.5/1.5
a = 5
y = 5(1.5)ˣ
Answer:
B
Step-by-step explanation:
x^0 y^-3
-----------------
x^2 y^-1
When dividing powers with the same base, we subtract
x^(0-2) y^(-3--1)
x^-2 y^(-3+1)
x^-2 y^-2
When they have a negative power a^-b = 1/a^b
1
-------------
x^2 y^2
Answer:
It is 1 1/2x - 1 3/4
Step-by-step explanation:
Hope this helpss
Answer:
189 people
Step-by-step explanation:
We can make a proportion to solve
We know that 7 out of 8 people prefer Brand X, and p out of 216 people prefer Brand X, so
7/8=p/216
To solve, we need to get p by itself.
To do this, we must multiply both sides by 216 to "reverse" the division being done to p.
216(7/8)=(p/216)216
189=p
So, out of 216 people, 189 people will prefer Brand X.
