Round 0.173 to the nearest hundredth
an adult meal cost $16
since y is already isolated, substitute it into the y of: 4x+3y=-36.
you should get: 4x+3(x+2)=-36
simplify this and you'll get:
add both of the variables:
add -6 to both sides, (because there is a -36 on one side, and a 6 on the other, you have to add a negative to eliminate the 6 whilst adding to the -36)
divide both sides by 7:
now substitute this into y=x+2
where p is the principal
r is the interest rate = 12.5 % = .125
t = time = 2 years
i = 5000* .125*2 =1250
the total cost is the loan plus the interest
a = 5000+1250
divide by the 24 months
to calculate an area of a rectangle, use the formula a=l*w. we know the width is 7m greater than the length. so w = 7 + x. so the area is a= (7+x)*x.
we also know the area is 170. substitute this value for a and solve.