Write a system of equations, and use the inverse of the coefficientmatrix to solve each system of equations. (See Example 1.)15. E-Commerce For online store sales, the payment processingservice Square charges 2.9% of the total sales plus S.30 pertransaction. For your online business, the cost of using Squarelast month was $291. A competitor to Square charges 3% oftotal sales plus $.25 per transaction, and your bill for the samemonth with that company would have been $295. Find the totalsales amount and the number of transactions. (Data from: www.squareup.com.)

A system of m×n numbers arranged in the form of a rectangular array having m rows and n columns is…

Answered: 15. E-Commerce For online store sales,…

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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If shares in Cleanaway Waste Ltd are $1.87 and they increase by 2.41%, what will the new share price be, to 2 decimal places? Include the dollar sign in your answer and no spaces.
Mason Industries purchased a drilling rig for $75,900. Delivery costs totaled $2,817. The useful life is 7 years and the salvage value is $12,952. Prepare a depreciation schedule using the straight-line method. Mason IndustriesDepreciation Schedule—Drilling End of Year Annual Depreciation ($) Accumulated Depreciation ($) Book Value ($) $78,717 (new) 1 $ $ $ 2 $ $ $ 3 $ $ $ 4 $ $ $ 5 $ $ $ 6 $ $ $ 7 $ $ $
Please answer letter b and c
Kiddie Kites buys Japanese kite kits with a list price of $9,500. If the supplier offers trade discounts of 30/15/15, find the trade discount amount to the nearest cent.
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Suppose that you borrow $15,000 for a new car. You can select one of the following loans, each requiring regular monthly payments: installment loan A: three year loan at 5.4% installment loan B: five year loan at 6.4% find the monthly payments and the total interest for both loan A and loan B. Compare the monthly payments and the total interest for the two loans.
2. Jack sold a t-shirt for $100, he made a profit percentage of 25%. Calculate: a. The cost price of the t-shirt b. The amount of profit Jack made. 3. James is a friend of the grocery store owner, the owner allocates to James' name, a special discount of 2% whenever he shops at the store. If James' total $156.20 calculate whether or not James' total would be under $150.00 after the discount. 4. Jake buys a shirt marked at $80. He receives a 10 per cent discount. How much does he pay for the shirt? Section 4 (Measurement) 1. Calculate the are and perimeter of a square with sides 8 cm. 2. Calculate volume of a cube with side 15 m.
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