The price of a sweater is $12 less than three times the price of a shirt. If three shirts and four sweaters cost $207. Find the price of each sweater and shirt.

a shirt costs $10.6 and a sweater costs $19.8

Step-by-step explanation:

w = price of sweater

s = price of shirts

w = 3s - 12

3s + 4w = 207

since w = 3s - 12 substitute it into the equation

3s + 4(3s - 12) = 207

3s + 12s - 48 = 207

15s - 48 = 207

     +48     +48

15s = 159

15     15

s = 10.6

substitute the value of s into any equation

w = 3s - 12

w = 3(10.6) - 12

w = 31.8 - 12

w = 19.8

hope this helps

-7

step-by-step explanation:

x^2 + 18x + 74 = (x + 9)^2 - 81 + 74

= (x + 9)^2 - 7.

so q = -7.