Add all the numbers together, and divide your total by the number of value there (in this case, 7). The nearest tenth is to one place after the decimal.


Simplification

Subtract sides 2

Simplification

Subtract sides -12x

Simplification

Divided sides by -6


It is must be in the box buddy.
And we're done...♥️♥️♥️♥️♥️
Answer:
Step-by-step explanation:
Interest formula -
I = P × R × T
I = 3,280 × 0.3% × 9
What I basically did there wws multiply the amount of money, the simple interest, and the time.
Turn 0.3% into a decimal by dividing by a 100 which should give you 0.003
I = 3,280 × 0.003 × 9
Put that into a calculator, you get $88.56
Now, that's just the interest amount. Now you add it back to 3,280 to get the *total* amount.
3,280 + 88.56 = 3,368.56
Cathy ends us paying $3,368.56
Hope what I said made sense.
The answer is the blue one (the one your mouse is hovering over)
30%*470=141 (So the number of students in 8 grade is 141)