3x-7=14
Hoped this helped!
I believe it’s (8,6) because dilation mean to make it bigger by 2
<h3>
Answer: a) Equation y= 20+ 1.50n.</h3><h3>b) Melia have $644 to spend on her 18th birthday.</h3>
Step-by-step explanation: We are given that Melia put $20 initially in piggy bank.
Each week amount added in piggy bank = $1.50.
Let us assume total number of weeks be n Melia added amount in piggy bank and get y amount after n weeks.
a) Therefore, total amount after n weeks = Initial amount + 1.50 times n weeks.
y= 20+ 1.50n.
b) On 18th birthday, there would be total 8 years after 10th birthday.
And in 8 years there would be 52 × 8 = 416 weeks.
So, in order to find the total amount after 8 years or 416 weeks, we need to plug n= 416 in the equation we got in a part.
Therefore,
y = 20+ 1.50(416)
y = 20 + 624 = 644.
<h3>Therefore, Melia have $644 to spend on her 18th birthday.</h3>
Answer: 20 km/h
Step-by-step explanation:
Speed = Distance / Time
Heon Train:
Translate minutes to hours:
90 minutes = 1.5 hours
= 120 / 1.5
= 80 km/h
Ami's Train
Train leaves at 11:25 and arrives at 15:10.
15:10 - 11:25 = 3hours 45 minutes
3 hours 45 minutes in minutes = (60 * 3) + 45 = 225 minutes
225 minutes in hours is = 225/60 = 3.75 hours
Speed of train = 375 / 3.75
= 100 km/h
Difference between average speeds:
= 100 - 80
= 20 km/h
