In conjunction with the Olympic Games which was held in Tokyo, KOKUYO Company sold three types of souvenirs, that are keychains, calculators and pens. The company ordered its supply of souvenirs in two types of packets. The cost of a packet which consists of three keychains, and two calculators is RM45, whereas the cost of a packet which consists of a keychain, a calculator and a pen is RM40. The cost of a pen is four times the cost of a keychain. If the costs of a keychain, a calculator and a pen are RM x , RM y and RM z respectively, obtain a matrix equation to represent the above information. Hence, determine the cost of each type of souvenir supplied to the company.​

walter needs to make at least 5 more cookies but no more than 40. 5 ≥ x ≥ 40;

step-by-step explanation:

walter has to make a minimum of 20 cookies. he already has 15 cookies made, so he must make 5 more to meet the minimum.

the maximum amount of cookies he can make is 55. he already has 15, so he has to make no more than 40 more cookies to meet the maximum.

= 5

step-by-step explanation:

to find the 15th term substitute n = 15 into the nth term formula

= (- 3 × 15 ) + 50 = - 45 + 50 = 5

step-by-step explanation:

well if you round, things become much more simple. round 5.95 to 6, 4.25 to 4, and 1.05 to 1. now, add 6+4+1 and that would equal 11. so the items together would equal to about $11.