Each time the value of n increases by 1, the value of an increases by a factor of 3. The 3rd choice is appropriate.
_____
When an expression like this one is written in plain text, it is appropriate (required) to put parentheses around the exponent that contains an arithmetic operation.
an = 4·3^(n-1)
If you leave off the parentheses, the expression no longer describes a geometric sequence.
Y-5=20
the y represents the unknown # that you used to subtract the five from
to find what y is you will need to ad 5 and 20 then y will be 25
5+20=25
25-5=20
y=25
The picture shows three kids playing with a ball Two more kids getting ice cream from a vendor stopped by the road and three more kids eating there ice cream with tall buildings in the back
Answer:
28 hours
Step-by-step explanation:
Set up an equation that represents the problem:
224 = 8x
Where x is the number of hours Jason mowed the lawn
Solve by dividing both sides by 8:
224 = 8x
/8 /8
28 = x
Therefore, Jason spent 28 hours mowing lawns.