9514 1404 393
Answer:
more than 10 months
Step-by-step explanation:
Alex's balance starts at 720 and increases by 80 each month. It can be represented by ...
A = 720 +80m
Jax's balance starts at 480 and increases by 120 each month. It can be represented by ...
J = 480 +120m
Jax's balance will be more than 160 more than Alex's when ...
J -A > 160
(480 +120m) -(720 +80m) > 160
40m -240 > 160 . . . . . . . . . . . . . collect terms
m -6 > 4 . . . . . . . . . . . . . . . divide by 40
m > 10 . . . . . . . . . . . . add 6
It will take more than 10 months for Jax to have saved over $160 more than Alex.
Question 1: Both are solutions.
Question 2: (4, 0)
Im assuming the question is asking: if she collected $22 in sales tax what was the cost of the items her store sold. you should make sure you type the question correctly otherwise it'll be hard to answer.
going with my assumption of what the question is, we want to find the total cost of all items her story sold. let that cost be c. since there is 5% sales tax on everything and we know the sales tax is worth $22,m we have:
5%(c) = 22
dividing both sides by 5% (or .05) gives:
c = $440
X^2 +r^2 = (r+h)^2 re write as x^2 = h^2 + 2*Rh
h = 4.5r = 3959
x^2 = 4.5^2 + 2 *3959 * 4.5
x^2 = 20.25 + 35631
x^2 = 35651.25
x = sqrt(35651.25)
x = 188.8 miles
