At Dakota's Donut Shop, donuts cost $1.50 and pigs-in-a- blanket cost $2.50 each. A customer bought twice as many donuts as pigs-in-a- blanket and spent a total of $16.50. How many pigs-in-s-blanket did she buy?

3 pigs in a blanket

Step-by-step explanation:

Set up a system of equations where d is the number of donuts and p is the number of pigs-in-a-blanket:

1.5d + 2.5p = 16.5

d = 2p

Solve by substitution, by plugging in 2p as d into the top equation:

1.5d + 2.5p = 16.5

1.5(2p) + 2.5p = 16.5

Simplify and solve for p:

3p + 2.5p = 16.5

5.5p = 16.5

p = 3

So, she bought 3 pigs in a blanket

step-by-step explanation:

it's 15

-8/2y-8=5/y+4-7y+8/y^2-16

we move all terms to the left:

-8/2y-8-(5/y+4-7y+8/y^2-16)=0

we can not solve this equation