Answer:
The expression that represents the total amount spent as a function of the number of points earned is x = y*5 - 500. This function is only valid for 100 or plus points, since that is the minimum amount of one can have after a purchase.
Step-by-step explanation:
To solve this problem we will first calculate the function that relates the number of points earned and the total spent x. This is given by:
y = f(x) = 100 + x/5
In order to calculate the function that represents the total spent as a function of points earned we need to isolate the variable x, in the expression above. We have:
y = 100 + x/5
y - 100 = x/5
x/5 = y - 100
x = y*5 - 500
The expression that represents the total amount spent as a function of the number of points earned is x = y*5 - 500. This function is only valid for 100 or plus points, since that is the minimum amount of points one can have after a purchase.
Answer:
560
Step-by-step explanation:
8(7(5)+7(4)+7)
8(35+28+7)
8(70)
=560
The new monthly cost would be $48.15. 7% of $45 is $3.15. You just add the number $45 with $3.15 to get the new monthly cost.
Answer:
4th term is -37.
Step-by-step explanation:
a2 = 2a1 - 3 = 2(-2) - 3 = -7
a3 = 2(-7) - 3 = -17
a4 = 2(-17) - 3 = -37.
