Use the formula B = P + Prt, which is used to calculate the balance in an account if simple interest is added to a principal P at an interest rate of r for t years.Suppose that an account earns 6.3% interest and after five years the balance is $5418.00. Find the principle that was invested.
A. $3708.14
B. $7909.49
C. $4120.15
D. $4944.18
Answer: C
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Add.5,72914633
A. 10,423 B. 11,413 C. 10,513 D. 11,523
Solve the problem.For the triangle with vertices located at A(3, 4, 5), B(5, 5, 4), and C(1, 1, 1) , find a vector from vertex C to the midpoint of side AB.
A. 
i + 1j + 
k
B. 5i + 
j + 
k
C. 3i + 
j + 
k
D. 4i + 
j + 
k
Find the perimeter of the polygon.Joe wants to frame his garden with pine lumber. How many feet of lumber will he need?
A. 28,684 ft B. 516 ft C. 412 ft D. 526 ft
Solve the problem.Softee Blankets charges $6 for shipping orders of $20 or less, $10 for orders from $20.01 to $70, and $15 for orders over $70. One week shipping charges for 520 orders totaled $5120. There were 50 more orders for $20 or less shipped than there were orders for over $70. Find the number of orders shipped at each rate.
A. $20 or less: 290; $20.01 to $70: 110; over $70: 120 B. $20 or less: 170; $20.01 to $70: 230; over $70: 120 C. $20 or less: 230; $20.01 to $70: 170; over $70: 120 D. The numbers cannot be determined from the given information.