15 + 1 because you are using apsolute value so that negative 1 becomes a positive
Answer:
X=11
Step-by-step explanation:
11-7=4 5(4)=20 So X equals 11
X = number of lessons, y = total cost
y = 15x + 20 <== ur equation
when total bill was 125...y = 125
125 = 15x + 20
125 - 20 = 15x
105 = 15x
105/15 = x
7 = x <=== if Bill took 7 lessons, it would cost 125 <==
Answer:i think its 21
Step-by-step explanation:
22.5 x 21=472.5 then u have to add 27.5 so 472.5 + 27.5=500
Step-by-step explanation: