Mikayla wrote the equation below to calculate y, the total amount of money in dollars she will have saved after she has been saving for x weeks. y = 6x + 80 How much more money will Mikayla have saved after 8 weeks compared to 5 weeks?
$8
$18
$98
$128
My answer is 18
yep
To find out how much more money Mikayla will have saved after 8 weeks compared to 5 weeks, you need to substitute the values of x into the equation and calculate the difference between the two values of y.
For x = 8, substitute it into the equation:
y = 6x + 80
y = 6(8) + 80
y = 48 + 80
y = 128
For x = 5, substitute it into the equation:
y = 6x + 80
y = 6(5) + 80
y = 30 + 80
y = 110
Now, subtract the value of y when x is 5 from the value of y when x is 8:
128 - 110 = 18
Therefore, Mikayla will have $18 more money saved after 8 weeks compared to 5 weeks.