Answer:
Average is 82
Step-by-step explanation:
88 + 73 + 81 + 83 + 79 + 73 + 97 = 574
Count of numbers = 7
574/7 = 82
Answer:
3y / (y+3)
Step-by-step explanation:
3y^2 - 6y / y^2 + y - 6
= 3y(y-2) / (y+3)(y-2)
=3y / (y+3)
Lol use a calculator Answer:
Step-by-step explanation:
F ( x ) = 7 x + 2
y = 7 x + 2
- 7 x = - y + 2 /*(-1)
7 x = y - 2 / : 7
x = y/7 - 2/7 = ( y - 2 ) / 7
The inverse of the function is:
f^(-1) ( x ) = ( x - 2 ) /7
Answer:
Kristi
Step-by-step explanation:
The formula for Simple Interest =
Principal × Rate × Time
For Kristi
Kristi invests $3,000 at a 7.25% annual simple interest rate,
Principal = $3000
Rate = 7.25% = 0.0725
Time = 1
Simple interest = $3000 × 0.0725 × 1
= $217.5
For Kari
Her sister Kari invests $3,200 at a 6.25% annual simple interest rate.
Principal = $3200
Rate = 6.25% = 0.0625
Time = 1
Simple interest = $3200 × 0.0625 × 1
= $200
From the above calculation, we can see that: Kristi will earn the greater amount of interest after one year
