16) 9y+2r If she bought 1 dog toy and 2 treats: 9(1)+2(2)= 13
17) 5n-3n= 2n
17-2+7= 22 Combine like terms
2n+22 Write out expression
2(8)+22= 38 Plug in 8.
Answer: 2n+22; 38
18) 5h^3 h represents the # of weeks; Find # of tickets sold in 3 weeks:h=3
5(3)^3 plug in 3
5(27) PEMDAS; Exponents first; 3*3*3= 27
Answer: 135
19) It is true
If d=2, 5(2)*5(2)*5(2)= (5*2)^3
10*10*10=(10)^3
1,000=1,000
P(7) = 
There are 8 possible outcomes from the spinner and only one 7, hence
P(7) = 
at a local school,940 students each wrote 40 letters to students in another country. how many letters were written in all. the answer is 37600
Answer:
15 outcomes
Step-by-step explanation:
We have three choices of ice cream containers.
We have five choices of ice cream flavors.
We are asking for a single scoop.
Using the cake cone 5 times for each flavor, we get 5 possibilities. Repeat this with the other two container choices, and we get 3 * 5 = 15.
Hope this helped! :D