A local fitness club charges its members a one-time registration fee and monthly dues. The total cost of a membership for .Xr months is modeled by the expression 15x+25. According to the model, the monthly dues are dollars and the one-time registration fee is dollars.

Step-by-step explanation:

let the cost be y

and the number of months be x

given that the cost is modeled as

y= 15x+25

we can solve for the charges after a series of months

say we want to calculate the charges for 5 month, we then have to put x=5 in the expression

y=15x+25.

y= 15(5)+25

y= 75+25

y=100

the charges for 5 months is $100

you can estimate for any number of months just put the number of months for x  

15

step-by-step explanation:

we are given the following expression and we are to solve it and find the product:

-13 × (-5)

solving the given expression in the standard order of solving a mathematical expression, beginning with the opening of brackets and then multiplying the terms and changing their signs.

-3 × -5 = 15 (answer is positive because when negative is multiplied with negative, it gives a positive answer)