Answer:
$300.64
Step-by-step explanation:
Step one:
Given data
Jennifer had $256.86
She made a deposit of $43.78
Required
The total amount in the account
Step two:
To get the balance, we need to sum the previous amount with the deposited amount
Total= 256.86 +43.78
Total=$300.64
The balance is $300.64
Subtract 30, then factor the equation.
... x² = 30
... x² - 30 = 0
... (x -√30)(x +√30) = 0
By the zero product rule, the solutions are values of x that make a factor be zero.
... x - √30 = 0 . . . . the first factor is zero
... x = √30
... x + √30 = 0 . . . . the second factor is zero
... x = -√30
The solutions are . . .
... x = ±√30 . . . . . matches your 3rd choice
The formula for exponential functions is:
y = ab^x
3x - 7 + 6 = 7x + 6
First shift all the pure numbers to one side
3x = 7x + 6 + 7 - 6
Now add up the pure numbers
3x = 7x + 7
Shift the 7x to the other side
3x - 7x = 7
-4x = 7
Divide 7 by - 4
X = - 1.75
Divide 384 by 12 then multiply it by 5 to give you 160
