Solve the system of equations by using substitution. 6r + 7s = –1

2r + 4s = –12

1) (–4, –8)

2) (–8, –4)

3) (–7, 8)

4) (8, –7)

Arectangle has a width of 5 cm and a length of 10 cm. if the width is increased by 3, how does the perimeter change?

Indicate the formula for the following conditions: p^c(n, r)=

Pamela has a 30-year, 5.75% mortgage on her $250,000 home. she has been paying on it for 5 years, and has recently hit some financial trouble. if her lender agreed to lower the interest rate on her $231,905.47 balance to 5.5%, what will her new payment be for the remainder of the loan?