8. Joe sorted all the soil in a sample into 10 batches. Each batch has a mass of 6.54 x 108 grams. What is the total mass of all 10 batches? A 6.54 x 107 C 6.54 x 109
B 6.54 x 10-7 D 6.54 x 10-9

4. Hempstead Lake Park is 7 x 105 square feet and Willow Park is 2 x 104 square feet. How many times larger is Hempstead Lake Park than Willow Park?
A 0.003 C 3
B 3.5 D 35

please hel due in 5 hrs

answer: you need to organize this better it does not make sense.

step-by-step explanation: ?

step-by-step explanation: so we look at the formula un = a + (n-1)d

un is the amount of seats

n is the nth term aka row number

a is the original sequence/row number

d is the difference between each term

so in this a=22 d=6 and n can remain as n because we are simply formjng a rule

lets put these in the equation

un=22+(n-1)(6)

this is your answer to part a

however

lets double check that this is correct, we'll try putting it into the second term

un=a+(n-1)d

u2=22+(2-1)(6)

u2=22+6

u2=28

as the question said the second row has 28 seats so now we know the formula we made is correct.

as for part b

un=a+(n-1)

its asking us to find a row with 100 seats.

remember un was the amount of seata so all we do is substitute this in.

un=100 a=22 d=6

un=a+(n-1)d

100=22+(n-1)(6)

so now we simplify to find n which is the row number.

100-22=22+(n-1)(6)-22

78=(n-1)(6)

78/6=(n-1)(6)/6

13=n-1

13+1=n-1+1

14=n

so now we know that in the 14th row there is 100 seats.

hope this and that you understood! its my first time using the app or anyone out on here : p its also me to revise so a bunch! ask more questions if you dont understand ☺

the domain of a function is the set of input values, x , for which a function is defined. the domain is shown in the left oval in the picture below. the function provides an output value, f(x) , for each member of the domain.