Answer:
Decrease in amount= $578
Year-end amount= $7,922
Step-by-step explanation:
0.068=x/8500
Isolate x to multiply 0.068 by 8500= 578 which is the decrease in dollars.
so, 8500-578= $7,922 is how much money was in his account at the end of last year.
Answer:
x= 3 inches
Step-by-step explanation:
-The volume of a box is given by the formula:

-We are given the dimensions h=x+2, l=2x+5 and w=4x-1.
We substitute this values in the formula and equate to the volume value.

#We take the values to the same side and equate to zero;

#Applying the zero factor principal to obtain the different values of x:

#We use the quadratic formula to solve the two other values of x:

The two other values are negatives. Ignore them since length cannot be a negative.
The only reasonable value of x is x=3
#We substitute in the formula to validate:

Hence, the value of x is 3 inches
Y = 1.50x + 4......x = 7
y = 1.50(7) + 4
y = 10.50 + 4
y = 14.50 <===
Answer:
-12
Step-by-step explanation: