Use distribution
-5t - 30 + 7t = 100
Combine like terms
2t - 30 = 100
Add 30 to both sides
2t = 130, t = 65
Solution: t = 65
B;
$6.00 lb + 15% = 6.00 x 1.15 = $6.90
$6.90 x 2.6lbs = $17.94
C;
New price is $.90 more.
3.5 x .90 = $3.15 more
Answer:
The sum is equal to 
Step-by-step explanation:
we know that
The formula to calculate the sum is equal to

In this problem
-----> number of terms
a1 is the first term

an is the last term

substitute

4x-6= 22
Move -6 to the other side.
Sign changes from -6 to +6.
4x-6+6= 22+6
4x= 22+6
4x= 28
Divide by 4 for both sides
4x/4= 28/4
x= 7
Answer : x= 7
Transforming the ODE yields




Partial fractions:





Take the inverse transform:
