You could multiply 118.56 by .16 which is 19 dollars rounded and subtract 19 from 117.56 to get your answer
We can build a system of two linear equations with two unknowns with the info provided in the problem, one with Kelsey info and one with Mitch info like so:
Lets call p the amount on peak minutes and n the amount of non-peak minutes:
45p + 50n = 27.75
70p + 30n = 36
lets reduce the equations dividing the first by 5:
9p + 10n = 5.55
<span>70p + 30n = 36
</span>now, to eliminate n, lets multiply the first equation by -3 and add the two equations:
-27p - 30n = -16.65
<span>70p + 30n = 36
</span>----------------------------
43p + 0 = 19.35
p = 19.35<span>/43
p = 0.45
therefore the peak rate is $0.45 per minute
lets substitute in one of the original equations this result:
</span><span>45p + 50n = 27.75
</span>45(0.45) + 50n = 27.75
20.25 <span>+ 50n = 27.75
50n = 27.75 - 20.25
50n = 7.5
n = 7.5/50
n = 0.15
therefore the non-peak rate per minute is $0.15</span>
To visualize better, look at it like this:
First, see if you can simplify 3/2. You can't, so leave it like that.
The rule for exponents is you subtract the exponent from the bottom (r) from the exponent on the top (
)
Put that on the top, and you get
3! possible ways for appetizers
5! possible ways for soups
10! entrees for lunch special
Therefore,
3! 5! 10! ways of ordering the lunch special menu.
Hope I helped :)
Answer:
gradient = 1
y-intercept = 4
Step-by-step explanation:
the equation for a linear graph is y = mx+c, where m is the gradient, and c is the y-intercept.
hence, the gradient of the equation is 1 and the y-intercept is 4.
