1. find the number of elements and subsets in the following set {{a, b,c, d}} 2. Solve (1*2)+(2*3)+(3*4)+...+(n*(n+1)) if n=300

4+n=5

step-by-step explanation:

this is because the four is four hours and the n represents the 1 extra hour over the weekend.

b= i'm srry i don't know that one.

4+n=5 n=1 because if vernon plays 5 hours a week then 4+1=5 hours.

hope this : )

each side has a different length.  

step-by-step explanation:

215.92 dollars is the answer

the answer is 1 becuz if it were 1.0 that would rip apart the entire so ya. : )

~potato.

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