Kenny ordered guitar strings for Glenn’s Guitar Shop. The premium guitar strings are $4. 50 apiece. The standard guitar strings are $1. 50 apiece. The bill smeared in the rain, but Kenny knows he ordered a total of 80 strings for $225. Let x = the number of premium strings. Let y = the number of standard strings. X y = 80, 4. 50x 1. 50y = 225 How many of each type of string did Kenny order? He ordered premium strings. He ordered standard strings.

x = 35     y = 45

Step-by-step explanation:

Total number of strings:  x + y = 80  ⇒  x = 80 - y

Substitute  x = 80 - y  into  4.5x + 1.5y = 225  to find y:

4.5(80 - y) + 1.5y = 225

360 - 4.5y + 1.5y = 225

                      3y = 135

                        y = 45

Substitute the found value of y into  x + y = 80  to find x:

x + 45 = 80

x = 80 - 45 = 35

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step-by-step explanation:

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e) none of the above because the measure of angle cba is 101°