Answer:
They buy 6 hotdogs and 5 popcorn
Step-by-step explanation:
Assume that they buy x hotdogs and y popcorn
∵ They buy a total of 11 hotdogs and popcorn
∵ The number of hotdogs is x and the number of popcorn is y
∴ x + y = 11 ⇒ (1)
∵ Hot dogs cost $2.50 each
∵ Popcorn costs $1.00 each
∵ They spend $20 on hot dogs and popcorn
→ Multiply x by 2.5 and y by 1, add the products and equate the sum by 20
∴ 2.5(x) + 1(y) = 20
∴ 2.5x + y = 20 ⇒ (2)
Now we have a system of equations to solve it
→ Subtract equation (1) from equation (2)
∵ (2.5x - x) + (y - y) = (20 - 11)
∴ 1.5x + 0 = 9
∴ 1.5x = 9
→ Divide both sides by 1.5 to find x
∴ x = 6
→ Substitute the value of x in equation (1) to find y
∵ 6 + y = 11
→ Subtract 6 from both sides
∴ 6 - 6 + y = 11 - 6
∴ y = 5
∴ They buy 6 hotdogs and 5 popcorn
You have to do 0.09 x 378.00 and you will get 34.02.
So basically the answer is 34.02
D is a function because there are no repeated x values
for example b is not a function because we have (0,-7) and (0,-9)
8%×n=2. 2÷8/100=2×100/8=100/4=25. so the answer is 25.
Answer:
5/4 cups fill each bottle
Step-by-step explanation:
5 5/8=45/8
4 1/2=9/2
Step by Step:
------------------
(45/8)/(9/2)
(45/8)(2/9)
(45/4)(1/9)
45/36
5/4
